---
product_id: 231121732
title: "Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue"
brand: "fitbit"
price: "$1.70"
currency: USD
in_stock: false
reviews_count: 13
url: https://www.desertcart.us/products/231121732-fitbit-fb417bknv-charge-4-fitness-wristband-storm-blue
store_origin: US
region: United States of America
---

# Water resistant up to 50 meters Built-in GPS for precise tracking 24/7 heart rate monitoring Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue

**Brand:** fitbit
**Price:** $1.70
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate your fitness game—track smarter, move farther, live better.

## Quick Answers

- **What is this?** Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue by fitbit
- **How much does it cost?** $1.70 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/231121732-fitbit-fb417bknv-charge-4-fitness-wristband-storm-blue)

## Best For

- fitbit enthusiasts

## Why This Product

- Trusted fitbit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **7-Day Battery Life:** Stay powered through your busiest week without constant recharging interruptions.
- • **Active Zone Minutes:** Get real-time buzz alerts when you hit your target heart rate zones—turn every move into progress.
- • **Swimproof Durability:** Dive into your fitness routine worry-free with water resistance up to 50 meters.
- • **Precision GPS Tracking:** Navigate your runs and rides with pinpoint accuracy—no phone needed.
- • **All-Day Heart Rate Insights:** Unlock deeper health trends and optimize every workout with continuous heart rate monitoring.

## Overview

The Fitbit Charge 4 Black is a sleek, swimproof fitness tracker featuring built-in GPS, 24/7 heart rate monitoring, sleep tracking, and Active Zone Minutes. With up to 7 days of battery life and Fitbit Pay, it offers comprehensive health insights and convenience for the modern fitness enthusiast.

## Description

4 Health Fitness Tracker Charge Working handinhand with your fitness tracking is the builtin 247 heart rate monitor which can track calorie burn and let you know when youre in personalized heart rate zones Based on your age and resting heart rate it can tell you when youre in the fat burning cardio or peak heart rate zones Even when youre asleep the Fitbit Charge 4 is working It can track your time in light deep and REM stages to provide you with a nightly sleep score Outside of optimizing health and fitness the Charge 4 has practical advantages throughout the day such as delivering smartphone alerts and notifications playing music via Spotify or paying for items with Fitbit Pay Features. Up to 7 Days Battery Life. BuiltIn GPS Navigation Tracking. 247 Heart Rate Tracking. 20 GoalBased Exercise ModesTracking. Swimproof up to 164. Light Deep REM Sleep Tracking. Control Your Smartphone Spotify App. Receive Smartphone Notifications. Backlit Grayscale OLED Touchscreen. Track Progress Connect with AppsSpecifications

Review: 5* for the device. 0* for Google. Not for instantaneous data. - I had a charge HR fitbit from 2016 until 2022, which worked perfectly. After a few years the band (not replaceable) came off, and I re-glued it, device still worked perfectly. In 2022 I decided to upgrade to the Charge 4 due to SpO2, sleep stage, etc. monitoring. The Charge 4 has worked perfectly since then. My only complaint is the band, which is stiff and not too comfortable (I wear it 24/7/365). That was solved by use of a fabric velcro wrap band (AVOD, reviewed elsewhere). Since I got that band I absolutely love the Charge 4. I bought more as backups, but they haven't been needed. Gave one to my wife, who likewise likes it. There are some caveats about accuracy, which I'll discuss in a minute, but I find them not to be an issue as long as you're aware of them. My issue is Google, which bought Fitbit. Before that, everything worked like clockwork. Give username, password, log into Fitbit, use app, stay logged in for months, easy-peasy. But for a couple of months Google is telling me that as of 2/2/2026 I can no longer use the app unless I switch the account to Google. No more email login. OK, pain in the butt, but OK. EXCEPT: The link Google gives DOES NOT WORK. It tells me my email is "already in use for a different device" so I can't move it. [the Charge, maybe? Who knows. They give zero details, and zero ways to remediate.] They also won't let me move it to a new email. Zero stars for the Google experience is too generous. My "backup plan" is to use one of the brand new Charge 4s and try to set it up on Google when they shut off "my" three year old one. Based on the experience so far, I give that about a 5% chance of working, but if it does, I'll try to update the review. [Or if a miracle happens and I can get the current one switched to Google.] So: Charge 4, top notch except limitations below. Google: For such an advanced outfit with so many brilliant people and such great AI and search, their customer interface on this SUCKS. Accuracy limitations/caveats on Charge 4. Basically, I have found it to be extremely accurate, but there are limitations. When you first stand up and walk, it misses the first few steps...several more than the Charge missed. Not really an issue. I might miss 50 steps a day that way. If your only "walking" is moving from a couch to an electric wheelchair, you might lose a good fraction of your few steps. If you take walks, it is with 1% of GPS distance. And the step count is extremely accurate. If I manually count steps walking around the house, it's within 1 or 2% of the manual count. A+ on that. [Likewise, if I run on a treadmill, it agrees with the treadmill within 1-2%] It does NOT, in general, for me, respond to wrist motions as "steps" although you can learn to move your wrist in such a way as to make it sometimes count a "step". I find that a non-issue. If I get a dozen fake steps a day from wrist motion, it balances the steps I miss when first standing up/walking. A+ overall on distance, steps. Pu;se rate: There is an issue with pulse rate. The issue is that when it changes dramatically (say from walking to running) the pulse registered is inaccurate. If I go from walking around the house to running up and down stairs, for example, the Charge 4 will tend to read about 20 beats/min high. It will record random spikes of 50 beats too high, so the "max" pulse during exercise needs to be taken with a grain of salt (pulse rate based on comparison to pulse oximeter or ECG heart rate monitor). But, if I sit in a chair, or walk at a steady pace, the fitbit, pulse oximeter, and the ECG all agree (again, 1-2%). I sleep with a pulse oximeter every night, the Charge 4 is within one or two beats of the pulse/ox every night. It averages a fraction of a beat different. A+ for accuracy on pulse WHEN you are in a steady state condition, particularly resting. So: Don't trust the instantaneous pulse readout IF you have just changed level of exertion. Don't trust the spikes. Otherwise, pretty good. Calories: Fitbit Calories are based on pulse rate, so the errors in pulse rate tend to overstate calories burned. I keep a record of calories based on distance walked, run, basal metabolism, etc. and the Charge 4 tends to overstate daily calorie burn by 20% or so, for me. You could determine how much it is for you, and if you like, adjust the number. For a given exercise session, the numbers are roughly credible say 10-15% of independent measurement, sometimes right on the independent measurement. That's all close enough for me. YMMV. Sleep: I had a professional sleep study under medical supervision. I wore my pulse/ox and the Charge 4 at the same time. As mentioned, the Charge 4 agrees with my pulse ox for pulse rate overnight, and is pretty close (tends to be 1-2% low) on SpO2. My pulse/ox (Sleepu) and Charge 4 likewise agreed with average pulse and SpO2 from the professional study (2% ish difference). Remarkably, I thought, the SLEEP STAGE durations reported by the Charge 4 were close (to my mind) to the professional device, which has far more input data. The Charge 4 underestimated Deep Sleep by 25% or so, but showed each stage at the time the professional unit showed it. I considered that to be pretty amazing. Overall: Fabulous for a cheap device with such limited input. Will be sorry to lose it to Google's messing about.
Review: Plastic pegs snap off, Band doesn’t stay on after awhile - I love Fitbits- have had two now and like the functionality of the app. I didn’t use mine for texting but was happy with the heart rate monitoring and step counting. However, after about 8 months, the plastic pegs that hold the bands on snapped off. This is the second time it has happened. First time, I bought the Fitbit at Costco and they gave me a full refund. I decided to take a leap of faith and order the same one here on desertcart (Costco was out of this version) and I liked how slender it was. Figured it was a fluke the first time, but it happened again. I contacted Fitbit customer service through the Fitbit app, and they replaced the part with a new watch face in a matter of a couple of days. I’m so happy with the quality and speed of the service and the watch face seems improved to the last one. Happy to still use my Fitbit!

## Features

- BATTERY LIFE: Up to 7 days
- Compatibility: Compatible with iOS 15 or higher & Android OS 9.0 or higher
- BUILT-IN GPS: With built-in GPS, leave your phone behind and explore the outdoors with pace and distance on your tracker and see a workout intensity map showing your route and effort in the app when you’re done.
- ACTIVE ZONE MINUTES: This feature alerts you to which heart rate zone you’re in so you can see if you’re working hard enough to reach your goals.
- SLEEP STAGES & SCORE: Charge 4 tracks your time in light, deep and REM sleep stages and gives you a nightly Sleep Score in the Fitbit app, so you can better understand your sleep quality and work toward better rest.
- NOTIFICATIONS & APPS: Stay connected with call, calendar and smartphone app alerts, text notifications and convenient apps like weather and timer. Plus, send quick replies to messages (Android only). Available when phone is nearby.
- 24/7 HEART RATE: Use 24/7 heart rate to better track calorie burn, optimise workouts and uncover personalised health trends that inspire you to make moves on your health and fitness goals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B086GNY129 |
| Additional Features | GPS, Heart Rate Monitor, Sleep Monitor |
| Age Range Description | Adult |
| Band Color | blue |
| Band Material Type | Silicone |
| Battery Capacity | 210 milliamp_hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Best Sellers Rank | #114,043 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #298 in Activity & Fitness Trackers |
| Brand | Fitbit |
| Built-In Media | Cable |
| Case Material Type | A material with properties similar to plastic or resin |
| Clasp Type | Tang Buckle |
| Closure Type | Magnetic |
| Color | Storm Blue / Black |
| Communication Feature | Bluetooth, Fitbit Pay |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Various smartphones running Mac OS X 12.2 and later, iPhone 5S and later, iPad 5 gen. and later, and Android 7.0 and later |
| Connectivity Technology | Bluetooth |
| Controller Type | IOS |
| Customer Reviews | 4.0 out of 5 stars 5,133 Reviews |
| Display Type | OLED |
| GPS Geotagging Functionality | Built-in GPS |
| Human Interface Input | Touchscreen |
| Item Dimensions | 9.72 x 1.13 x 0.49 inches |
| Item Weight | 0.59 g |
| Manufacturer | Fitbit |
| Metrics Measured | Accelerometer, Optical Heart Rate Sensor, Sleep Tracker |
| Model Name | charge 4 |
| Model Number | FB417BKNV |
| Operating System | [Proprietary Fitbit Operating System] |
| Resolution | 50 x 50 |
| Screen Size | 1.25 inches |
| Shape | Rectangular |
| Special Feature | GPS, Heart Rate Monitor, Sleep Monitor |
| Sport Type | Fitness |
| Style Name | Modern |
| Supported Application | Fitness Tracker, GPS, Heart Rate Monitor, Sleep Monitor |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adult |
| UPC | 811138039448 |
| Warranty Type | Standard/Full, Limited, or Extended |
| Water Resistance Depth | 50 meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IPX7 |
| Wearable Computer Type | Activity Tracker |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
| Wireless Provider | Blue |

## Product Details

- **Battery Cell Composition:** Lithium Ion
- **Brand:** Fitbit
- **Connectivity Technology:** Bluetooth, NFC
- **GPS:** Built-in GPS
- **Memory Storage Capacity:** 6400 MB
- **Operating System:** Android
- **Screen Size:** 1.5 inches
- **Shape:** Rectangular
- **Special Feature:** Heart Rate Monitor, Sleep Monitor, GPS, Calorie Tracker, Daily Workout Memory
- **Wireless Communication Standard:** Bluetooth

## Images

![Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue - Image 1](https://m.media-amazon.com/images/I/71pt3VmYV1L.jpg)
![Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue - Image 2](https://m.media-amazon.com/images/I/71A-thqq8xL.jpg)
![Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue - Image 3](https://m.media-amazon.com/images/I/81PJa6wXD9L.jpg)
![Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue - Image 4](https://m.media-amazon.com/images/I/817kFZ9XCRL.jpg)
![Fitbit FB417BKNV Charge 4 Fitness Wristband - Storm Blue - Image 5](https://m.media-amazon.com/images/I/816hR-i9XcL.jpg)

## Available Options

This product comes in different **Color, Size, Band Color** options.

## Questions & Answers

**Q: Does it come with a charger?**
A: It comes with a cord that you attach to your Fitbit and it has  USB plug on the other end.

**Q: How do I change the time**
A: You don’t have to. It changes automatically. Just like your phone.

**Q: Is this compatible with a Samsung S10 128gig?**
A: Yes

**Q: Does this calculate how many calories you intake from eating and drinking?**
A: No, it calculates how many calories you have burned off from your activity level.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5* for the device. 0* for Google. Not for instantaneous data.
*by S***T on January 2, 2026*

I had a charge HR fitbit from 2016 until 2022, which worked perfectly. After a few years the band (not replaceable) came off, and I re-glued it, device still worked perfectly. In 2022 I decided to upgrade to the Charge 4 due to SpO2, sleep stage, etc. monitoring. The Charge 4 has worked perfectly since then. My only complaint is the band, which is stiff and not too comfortable (I wear it 24/7/365). That was solved by use of a fabric velcro wrap band (AVOD, reviewed elsewhere). Since I got that band I absolutely love the Charge 4. I bought more as backups, but they haven't been needed. Gave one to my wife, who likewise likes it. There are some caveats about accuracy, which I'll discuss in a minute, but I find them not to be an issue as long as you're aware of them. My issue is Google, which bought Fitbit. Before that, everything worked like clockwork. Give username, password, log into Fitbit, use app, stay logged in for months, easy-peasy. But for a couple of months Google is telling me that as of 2/2/2026 I can no longer use the app unless I switch the account to Google. No more email login. OK, pain in the butt, but OK. EXCEPT: The link Google gives DOES NOT WORK. It tells me my email is "already in use for a different device" so I can't move it. [the Charge, maybe? Who knows. They give zero details, and zero ways to remediate.] They also won't let me move it to a new email. Zero stars for the Google experience is too generous. My "backup plan" is to use one of the brand new Charge 4s and try to set it up on Google when they shut off "my" three year old one. Based on the experience so far, I give that about a 5% chance of working, but if it does, I'll try to update the review. [Or if a miracle happens and I can get the current one switched to Google.] So: Charge 4, top notch except limitations below. Google: For such an advanced outfit with so many brilliant people and such great AI and search, their customer interface on this SUCKS. Accuracy limitations/caveats on Charge 4. Basically, I have found it to be extremely accurate, but there are limitations. When you first stand up and walk, it misses the first few steps...several more than the Charge missed. Not really an issue. I might miss 50 steps a day that way. If your only "walking" is moving from a couch to an electric wheelchair, you might lose a good fraction of your few steps. If you take walks, it is with 1% of GPS distance. And the step count is extremely accurate. If I manually count steps walking around the house, it's within 1 or 2% of the manual count. A+ on that. [Likewise, if I run on a treadmill, it agrees with the treadmill within 1-2%] It does NOT, in general, for me, respond to wrist motions as "steps" although you can learn to move your wrist in such a way as to make it sometimes count a "step". I find that a non-issue. If I get a dozen fake steps a day from wrist motion, it balances the steps I miss when first standing up/walking. A+ overall on distance, steps. Pu;se rate: There is an issue with pulse rate. The issue is that when it changes dramatically (say from walking to running) the pulse registered is inaccurate. If I go from walking around the house to running up and down stairs, for example, the Charge 4 will tend to read about 20 beats/min high. It will record random spikes of 50 beats too high, so the "max" pulse during exercise needs to be taken with a grain of salt (pulse rate based on comparison to pulse oximeter or ECG heart rate monitor). But, if I sit in a chair, or walk at a steady pace, the fitbit, pulse oximeter, and the ECG all agree (again, 1-2%). I sleep with a pulse oximeter every night, the Charge 4 is within one or two beats of the pulse/ox every night. It averages a fraction of a beat different. A+ for accuracy on pulse WHEN you are in a steady state condition, particularly resting. So: Don't trust the instantaneous pulse readout IF you have just changed level of exertion. Don't trust the spikes. Otherwise, pretty good. Calories: Fitbit Calories are based on pulse rate, so the errors in pulse rate tend to overstate calories burned. I keep a record of calories based on distance walked, run, basal metabolism, etc. and the Charge 4 tends to overstate daily calorie burn by 20% or so, for me. You could determine how much it is for you, and if you like, adjust the number. For a given exercise session, the numbers are roughly credible say 10-15% of independent measurement, sometimes right on the independent measurement. That's all close enough for me. YMMV. Sleep: I had a professional sleep study under medical supervision. I wore my pulse/ox and the Charge 4 at the same time. As mentioned, the Charge 4 agrees with my pulse ox for pulse rate overnight, and is pretty close (tends to be 1-2% low) on SpO2. My pulse/ox (Sleepu) and Charge 4 likewise agreed with average pulse and SpO2 from the professional study (2% ish difference). Remarkably, I thought, the SLEEP STAGE durations reported by the Charge 4 were close (to my mind) to the professional device, which has far more input data. The Charge 4 underestimated Deep Sleep by 25% or so, but showed each stage at the time the professional unit showed it. I considered that to be pretty amazing. Overall: Fabulous for a cheap device with such limited input. Will be sorry to lose it to Google's messing about.

### ⭐⭐⭐⭐⭐ Plastic pegs snap off, Band doesn’t stay on after awhile
*by S***R on April 19, 2022*

I love Fitbits- have had two now and like the functionality of the app. I didn’t use mine for texting but was happy with the heart rate monitoring and step counting. However, after about 8 months, the plastic pegs that hold the bands on snapped off. This is the second time it has happened. First time, I bought the Fitbit at Costco and they gave me a full refund. I decided to take a leap of faith and order the same one here on Amazon (Costco was out of this version) and I liked how slender it was. Figured it was a fluke the first time, but it happened again. I contacted Fitbit customer service through the Fitbit app, and they replaced the part with a new watch face in a matter of a couple of days. I’m so happy with the quality and speed of the service and the watch face seems improved to the last one. Happy to still use my Fitbit!

### ⭐ Defective item
*by L***K on January 28, 2025*

I have had a fitbit Charge 4 for years. I liked the simplicity and ease of use, as well as the 7 day battery life. So, I took a chance and ordered a new Charge 4 even though it is several model years old. Big mistake! Initially, the new charge 4 synched to the Fitbit App and everything was fine. But then, after a week, it would lock up and never finish synching. I restarted the app, re-paired the device and finally did a hard reboot while charging. It worked again for 2 days, then suddenly stopped recording my steps. I did another hard reboot and it worked for 1.5 days. Then, it stopped recording steps again and the heart monitor stopped working. And then many other things started displaying bad information. At that point, I gave up and returned the defective device. I'll be moving to an Apple Watch SE. So sad as I loved my Charge 4 and really hoped it was a device that I could keep using for the future.

## Frequently Bought Together

- Fitbit Charge 4 Black Advanced Fitness Tracker
- 4 Pack Stretchy Band Compatible with Fit bit Charge 4 Bands/ Charge 3 Band/ Charge 3SE Smart Watch Wristbands for Women Men, Breathable Adjustable Loop Nylon Replacement Straps Elastic Charge 3 Wristbands for Women Men
- AVOD Nylon Watch Bands Compatible with Fitbit Charge 4/Charge 3/SE, Soft Replacement Wristband Breathable Sport Strap with Band for Women Men

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-27*