---
product_id: 136586282
title: "Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black"
brand: "garmin"
price: "$1.59"
currency: USD
in_stock: false
reviews_count: 13
url: https://www.desertcart.us/products/136586282-garmin-forerunner-45s-39mm-easy-to-use-gps-running-watch
store_origin: US
region: United States of America
---

# Accurate GPS tracking 7-day battery life Wrist-based heart rate monitor Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black

**Brand:** garmin
**Price:** $1.59
**Availability:** ❌ Out of Stock

## Summary

> 🏃‍♂️ Elevate your run, own your day with Garmin Forerunner 45!

## Quick Answers

- **What is this?** Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black by garmin
- **How much does it cost?** $1.59 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/136586282-garmin-forerunner-45s-39mm-easy-to-use-gps-running-watch)

## Best For

- garmin enthusiasts

## Why This Product

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

## Key Features

- • **All-Day Wear Comfort:** Lightweight 42mm design with silicone band, perfect for running, working, and sleeping.
- • **Precision GPS Tracking:** Map your runs with pinpoint accuracy and analyze pace & distance effortlessly.
- • **24/7 Heart Rate Monitoring:** Stay in tune with your body using continuous, wrist-based heart rate data—no chest strap needed.
- • **Adaptive Garmin Coach Plans:** Get personalized, expert training plans that evolve with your progress—your personal coach on your wrist.
- • **Smart Connectivity & Safety:** Receive calls, texts, music controls, and incident detection alerts—stay connected and secure on every run.

## Overview

The Garmin Forerunner 45 is a sleek, lightweight 42mm GPS running watch designed for runners and fitness enthusiasts. It features built-in GPS for precise pace and distance tracking, wrist-based heart rate monitoring, and up to 7 days of battery life in smartwatch mode. With Garmin Coach adaptive training plans, smart notifications, music controls, and safety features like incident detection, it’s your all-in-one companion for smarter, safer, and more connected workouts.

## Description

When you Lace up your shoes and get ready to run, make sure you have the right tool for the job. Forerunner 45S is the smaller-sized GPS running Watch with all the running-related features you need in a sleek, lightweight smartwatch that you’ll want to wear all day and night.

Review: Finally a Smaller Forerunner! - Update July 18: I've started wearing the 45s for sleep. It does indeed show REM. It doesn't offer pulse ox. The 45s works great with my Scosche Rhythm+ heart rate monitor. As is typical with wrist-based HRMs, I have to move the 45s higher on my arm and tighten it a bit during workouts where I'm swinging my arms. I find it easier to use the Rhythm+ during activity since I already owned it. Firmware update 2.60 didn't fix the notification issue I reported in my initial review, but Garmin support is working on it and will notify me when a fix is released. I do wish there were more band colors available for the 45s. I'm increasing my rating from 4 stars to 5. This is a great watch! Original review: I'm not a runner. I'm a walker with health issues, so I wanted something to track activity, training walks, sleep, etc. I left Fitbit (after owning almost every device since the original), as I got tired of not being able to share my Fitbit data with Apple Health and other health/fitness apps. Even though Fitbit advertises the ability to share data with Withings, One Drop, Cardiogram, etc., data doesn't import consistently, accurately or completely. Anyway, the Apple watch series 4 didn't work for me, as I had to charge it every night. So I started looking at the new Garmin devices. I did own a Forerunner 235 briefly a couple years ago, but it was so big on my small wrist and way overkill for my needs that I moved it along. I picked up the new Vivosmart 4, and it's a nice, small device that tracks steps accurately, but it has no GPS (or even connected GPS). It does have fantastic sleep tracking with an SpO2 sensor! Next I tried the Forerunner 45s. Unfortunately it doesn't use the SpO2 sensor, so there's no pulse ox. I've always preferred black or grey watches, so my choice of white or what looks like purple (in the pics) but is actually blue, was disappointing. I debated about getting the larger 45, but in the end I decided on white. It's nice looking, and the white silicone strap cleans up well in warm water and a mild facial cleanser. It's got everything I want except the SpO2 sensor that Vivosmart 4, Forerunner 245 and up have. Currently I'm wearing the Vivosmart 4 for sleep and the Forerunner 45s for daily wear and workouts. I was hesitant to buy the 45s after reading about connectivity issues. I had those issues too at first. It was extremely frustrating downloading the firmware update when the watch wouldn't stay connected to my phone. But once I got the firmware updated, the watch has stayed connected without issue (iPhone Xs). It's the original firmware that's the problem, not the watch! The one thing that does really bug me (and that Garmin will likely fix in future updates) is that even when I turn notifications off, I still get ALL notifications sent to my phone! The 45s has a choice of all notifications, calls and texts, calls or off. Further, notifications have to be cleared individually. I can find no "clear all" option. I finally got rid of notifications by removing the notifications widget. I would really like to get just calls and texts. I just updated to firmware 2.60 that installed quickly. Let's hope this fixes the notifications issue! I've done one walk, and the 45s worked great. I just paired my Rhythm+ heart rate monitor, so I'll try that on my next walk. I'll expand this review as I use the 45s.
Review: Absolutely love this watch - This is my first running watch. I didn't want anything big or fancy or anything that had more than I needed. I've had this watch now for about a year and a half and I absolutely adore it. I use it mostly for running paces and distances as well as step count. I don't really pay attention to sleep data or the body battery, as they aren't really super accurate. I will sleep TERRIBLY one night on occasion and the watch will say I slept all night without waking and my body battery is 100. Not a chance, fam. Also, recovery is usually based on hrv, which, according to the current research, isn't a great measure. So really I don't put much stock in that stuff. Calories burned are also not accurate on most wearables. I find the HR can lag a bit. I will be GASPING for air at some point during a workout and my HR will say 110. 2-3 mins later, I finally see 160+ show up. But it's not really enough for me to not like the watch - just something I've noticed. I've never had issues with the gps connecting, but I know that's an issue for some. The wrist strap will cause me issues if I don't switch wrists at night. I wear it on my left arm during the day and my right arm at night while I sleep and I haven't had any issues since adopting that method. I love the ability to program the runs my coach programs for me using the app and I find the app to be pretty intuitive. I am noticing the longer I have the watch, the shorter the battery life is getting. I ONLY use gps for my 3 weekly runs, and those runs are usually only about 30-40 min long. So I'm only using GPS about 90-120 mins a week and I'd say I get about 3 days out of a charge right now. I'm DREADING the day mine dies. I feel like all the new watches out there come with so many features I don't want or need and this little guy is just so perfect.

## Features

- Gps running Watch with Garmin Coach training plan support.Supported Application:GPS. Connectivity technology:GPS. Wireless comm standard:Bluetooth
- Smaller-sized easy-to-use running watch estimates heart rate at the wrist and Features GPS to Track your pace, distance, intervals and more
- Works with free Garmin Coach Adaptive training plans that bring expert, personalized coaching right to your wrist
- Connected features include smart notifications for incoming texts and calls, automatic uploads to our Garmin connect online community, live tracking and controls for the music playing on your paired compatible smartphone
- Safety and tracking Features include incident detection (during select activities) which sends your real-time location to emergency contacts through your paired compatible smartphone
- Included Components: Forerunner 45S; Charging Cable; Documentation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Y62X3JS |
| Additional Features | Built-In Sports Apps; Wrist-Based Heart Rate; Built-In GPS; Stress Tracking; Body Battery™ Energy Monitor, Fitness Tracking; Smart Notifications; Safety And Tracking Features; Music Controls |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Silicone |
| Battery Average Life | 7 days |
| Battery Cell Composition | Lithium-Cobalt |
| Battery Cell Type | Lithium-Cobalt |
| Best Sellers Rank | #209,895 in Electronics ( See Top 100 in Electronics ) #96 in Running GPS Units |
| Brand | Garmin |
| Built-In Media | Forerunner 45S; Charging Cable; Documentation |
| Case Material Type | Stainless Steel |
| Cellular Technology | LTE |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Color | Black |
| Communication Feature | GPS, Bluetooth, ANT+ |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android, iOS |
| Connectivity Technology | GPS |
| Controller Type | Buttons |
| Customer Reviews | 4.5 out of 5 stars 3,600 Reviews |
| Display Type | Color TFT |
| GPS | True |
| GPS Geotagging Functionality | True |
| Global Trade Identification Number | 00753759245979 |
| Human Interface Input | Buttons |
| Item Dimensions | 2.72 x 2.8 x 6.42 inches |
| Item Dimensions D x W x H | 0.45"D x 1.56"W x 0.45"H |
| Item Type Name | Running Watch |
| Item Weight | 0.12 kg |
| Manufacturer | Garmin |
| Maximum Display Brightness | 400 nit |
| Metrics Measured | GPS, Optical Heart Rate |
| Model Name | Forerunner 45S, Black |
| Model Number | 010-02156-02 |
| Operating System | Android |
| Resolution | 208 x 208 |
| Screen Size | 1.04 inches |
| Shape | Round |
| Sim Card Size | eSIM |
| Special Feature | Built-In Sports Apps; Wrist-Based Heart Rate; Built-In GPS; Stress Tracking; Body Battery™ Energy Monitor, Fitness Tracking; Smart Notifications; Safety And Tracking Features; Music Controls Special Feature Built-In Sports Apps; Wrist-Based Heart Rate; Built-In GPS; Stress Tracking; Body Battery™ Energy Monitor, Fitness Tracking; Smart Notifications; Safety And Tracking Features; Music Controls See more |
| Sport Type | Running, Training |
| Style Name | 45s |
| Supported Application | GPS |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| UPC | 753759245979 |
| Warranty Description | 1 year limited warranty |
| Warranty Type | Limited |
| Water Resistance Depth | 50 meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IPX5 |
| Wearable Computer Type | Smart Watch |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |

## Product Details

- **Battery Capacity:** 200 milliamp_hours
- **Battery Cell Composition:** Lithium Polymer
- **Connectivity Technology:** Bluetooth
- **GPS:** True
- **Memory Storage Capacity:** 1 GB
- **Operating System:** Android
- **Screen Size:** 1.04 inches
- **Shape:** Round
- **Wireless Communication Standard:** Bluetooth

## Images

![Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black - Image 1](https://m.media-amazon.com/images/I/7148-NfAFqL.jpg)
![Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black - Image 2](https://m.media-amazon.com/images/I/713ypUzO30L.jpg)
![Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black - Image 3](https://m.media-amazon.com/images/I/710HEEL9PxL.jpg)
![Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black - Image 4](https://m.media-amazon.com/images/I/714FA5vJtEL.jpg)
![Garmin Forerunner 45s, 39MM Easy-to-Use GPS Running Watch with Garmin Coach Free Training Plan Support, Black - Image 5](https://m.media-amazon.com/images/I/711y0KRfAcL.jpg)

## Available Options

This product comes in different **Pattern, Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Finally a Smaller Forerunner!
*by T***W on July 11, 2019*

Update July 18: I've started wearing the 45s for sleep. It does indeed show REM. It doesn't offer pulse ox. The 45s works great with my Scosche Rhythm+ heart rate monitor. As is typical with wrist-based HRMs, I have to move the 45s higher on my arm and tighten it a bit during workouts where I'm swinging my arms. I find it easier to use the Rhythm+ during activity since I already owned it. Firmware update 2.60 didn't fix the notification issue I reported in my initial review, but Garmin support is working on it and will notify me when a fix is released. I do wish there were more band colors available for the 45s. I'm increasing my rating from 4 stars to 5. This is a great watch! Original review: I'm not a runner. I'm a walker with health issues, so I wanted something to track activity, training walks, sleep, etc. I left Fitbit (after owning almost every device since the original), as I got tired of not being able to share my Fitbit data with Apple Health and other health/fitness apps. Even though Fitbit advertises the ability to share data with Withings, One Drop, Cardiogram, etc., data doesn't import consistently, accurately or completely. Anyway, the Apple watch series 4 didn't work for me, as I had to charge it every night. So I started looking at the new Garmin devices. I did own a Forerunner 235 briefly a couple years ago, but it was so big on my small wrist and way overkill for my needs that I moved it along. I picked up the new Vivosmart 4, and it's a nice, small device that tracks steps accurately, but it has no GPS (or even connected GPS). It does have fantastic sleep tracking with an SpO2 sensor! Next I tried the Forerunner 45s. Unfortunately it doesn't use the SpO2 sensor, so there's no pulse ox. I've always preferred black or grey watches, so my choice of white or what looks like purple (in the pics) but is actually blue, was disappointing. I debated about getting the larger 45, but in the end I decided on white. It's nice looking, and the white silicone strap cleans up well in warm water and a mild facial cleanser. It's got everything I want except the SpO2 sensor that Vivosmart 4, Forerunner 245 and up have. Currently I'm wearing the Vivosmart 4 for sleep and the Forerunner 45s for daily wear and workouts. I was hesitant to buy the 45s after reading about connectivity issues. I had those issues too at first. It was extremely frustrating downloading the firmware update when the watch wouldn't stay connected to my phone. But once I got the firmware updated, the watch has stayed connected without issue (iPhone Xs). It's the original firmware that's the problem, not the watch! The one thing that does really bug me (and that Garmin will likely fix in future updates) is that even when I turn notifications off, I still get ALL notifications sent to my phone! The 45s has a choice of all notifications, calls and texts, calls or off. Further, notifications have to be cleared individually. I can find no "clear all" option. I finally got rid of notifications by removing the notifications widget. I would really like to get just calls and texts. I just updated to firmware 2.60 that installed quickly. Let's hope this fixes the notifications issue! I've done one walk, and the 45s worked great. I just paired my Rhythm+ heart rate monitor, so I'll try that on my next walk. I'll expand this review as I use the 45s.

### ⭐⭐⭐⭐⭐ Absolutely love this watch
*by B***H on June 8, 2023*

This is my first running watch. I didn't want anything big or fancy or anything that had more than I needed. I've had this watch now for about a year and a half and I absolutely adore it. I use it mostly for running paces and distances as well as step count. I don't really pay attention to sleep data or the body battery, as they aren't really super accurate. I will sleep TERRIBLY one night on occasion and the watch will say I slept all night without waking and my body battery is 100. Not a chance, fam. Also, recovery is usually based on hrv, which, according to the current research, isn't a great measure. So really I don't put much stock in that stuff. Calories burned are also not accurate on most wearables. I find the HR can lag a bit. I will be GASPING for air at some point during a workout and my HR will say 110. 2-3 mins later, I finally see 160+ show up. But it's not really enough for me to not like the watch - just something I've noticed. I've never had issues with the gps connecting, but I know that's an issue for some. The wrist strap will cause me issues if I don't switch wrists at night. I wear it on my left arm during the day and my right arm at night while I sleep and I haven't had any issues since adopting that method. I love the ability to program the runs my coach programs for me using the app and I find the app to be pretty intuitive. I am noticing the longer I have the watch, the shorter the battery life is getting. I ONLY use gps for my 3 weekly runs, and those runs are usually only about 30-40 min long. So I'm only using GPS about 90-120 mins a week and I'd say I get about 3 days out of a charge right now. I'm DREADING the day mine dies. I feel like all the new watches out there come with so many features I don't want or need and this little guy is just so perfect.

### ⭐⭐⭐⭐⭐ Substantial improvement over my Forerunner 15! GOOD CUSTOMER SERVICE!!
*by C***Y on September 13, 2020*

I reviewed many watches and this one matched up well with my previous Forerunner 15 learning curve (15 no longer held a charge). The size is better for your wrist (6ft 150 lbs small wrists) and can easily be worn as an all day watch. There is a good bit to learn on setting it up but it does a good job from the get go; at least for a 35 year runner with a need to just get the info but not all the bells and whistles. It tracks perfectly with GPS in my area but I did have to find the right sat link spot in my yard to set it down and then let it link over a few minutes, sats are unblock located west/north for my area in SW Virginia. I love the roll arm light comes on feature and the face presentation is easy to program for what info you need on your run. Seems to hold a charge well and links well with my phone and my Garmin site online. No real complaints but will update in 6 mths if that changes. April 2021 8 months after I got the watch. The watch started to not hold a charge, with multiple tries to fix. Contacted customer service, they gave suggestions and that did not work and I was suggested to send it back, in 5 days I got a new one and it is working well now. Excellent service.

## Frequently Bought Together

- Garmin 010-02156-05 Forerunner 45, 42mm Easy-to-use GPS Running Watch with Coach Free Training Plan Support, Black
- Supershieldz (2 Pack) Designed for Garmin Forerunner 55 / 45s / 45 Tempered Glass Screen Protector, Anti Scratch, Bubble Free
- Kissmart Charger for Forerunner 45 / 45S, Replacement Charging Cable Cord Plus a White Silicone Charger Port Protector Anti Dust Plug for Garmin Forerunner 45 Smart Watch

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-11*