---
product_id: 466651648
title: "PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time"
brand: "casio"
price: "$478.50"
currency: USD
in_stock: true
reviews_count: 13
category: "Casio"
url: https://www.desertcart.us/products/466651648-prg340-series-pro-trek-100-meter-water-resistance-compass-alt
store_origin: US
region: United States of America
---

# 100M Water Resistance - adventure-ready Triple Sensor Compass - precise navigation Tough Solar Power - endless energy PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time

**Brand:** casio
**Price:** $478.50
**Availability:** ✅ In Stock

## Summary

> 🕶️ Own the outdoors with smart, sustainable style.

## Quick Answers

- **What is this?** PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time by casio
- **How much does it cost?** $478.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/466651648-prg340-series-pro-trek-100-meter-water-resistance-compass-alt)

## Best For

- casio enthusiasts

## Why This Product

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

## Key Features

- • **Solar-Powered Freedom:** Harness sunlight for uninterrupted power—ditch daily charging anxiety.
- • **Triple Sensor Precision:** Navigate with confidence using compass, altimeter, barometer & thermometer all-in-one.
- • **Clear, Functional Display:** Super Illuminator LED & rotating bezel ensure quick, glare-free data access anytime.
- • **Eco-Conscious Craftsmanship:** Built with sustainable biomass materials and recyclable packaging—wear your values.
- • **Rugged 100M Water Resistance:** Dive, swim, or hike through rainstorms without missing a beat.

## Overview

The Casio PRG340 Pro Trek is a solar-powered, eco-friendly adventure watch featuring a triple sensor suite (compass, altimeter, barometer, thermometer), 100-meter water resistance, and a bright LED display. Designed for professionals who demand precision and durability, it combines rugged functionality with sustainable materials and recyclable packaging, making it the ultimate companion for both urban explorers and nature enthusiasts.

## Description

Buy Casio PRG340 Series | Pro Trek | Green | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time and other Wrist Watches at desertcart.com. Our wide selection is eligible for free shipping and free returns.

Review: Yet another classic win for Casio. Checks all the boxes. - This watch was a replacement for my 12 year old Casio Pro Trek PRW 3500. The new watch is lighter, thinner and the buttons are easier to activate. I love the rugged and functional looks of this watch. Also, unlike the Apple Watch, you don't need to worry about recharging the battery, it's solar powered. A big plus if you plan to be somewhere that does not have access to electrical outlets. The only thing missing in this watch vs. the 3500 is atomic auto timing. But with the watch being +/- 15 seconds per month that is no big deal.
Review: Love love love this watch - I've been wearing digital casios since 1981, most recently the G-shock series. However, the G-shock seemed oriented towards very high durability and a military look, which seemed unnecessary. Some of them had features on the face, for example graphic illustration of the passage of seconds or phases of the moon, that seemed decorative rather than useful. These resulted in cluttered faces. The Pro Trek is simple and functional. Date and time are very visible with a glance. Battery with solar replenishment (and a small charge status indicator), no USB charging. My phone will give me global positioning with a bigger format, no need to duplicate with a watch that will just be one more thing needing charging. One drawback is that some of the minor indicators on the face for settings are much too small, but these are ones that are typically set and not adjusted. I love the very visible compass feature (even though my phone does have one), useful in both urban and nature settings. The Pro Trek is fairly large but is more comfortable that my previous smaller G-shock. Sometimes things are just very pleasing, and this is the case for me with the Pro Trek. I've dropped and banged it a number of times and anticipate continued durability even if it's not a G-shock. BTW, desertcart had an unusually good price, which often is not the case.

## Features

- Casio's Tough Solar Technology charges your watch by converting light to energy
- Part of Casio's green initiative - Featuring Eco-Friendly Biomass Construction and environmentally friendly / recyclable packaging, paperwork & user's manual
- Triple Sensor (Version 3) includes a Digital Compass, Barometer, Thermometer & Altimeter
- 100M Water Resistance | Rotating Bezel | Super Illuminator w/ Full Auto LED/LCD Screen
- Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Z3GNB99 |
| ASIN  | B09Z3GNB99 |
| Additional Features | Compass |
| Age Range Description | Adult |
| Band Color | Green |
| Band Material Type | Plastic |
| Band Width | 22 Millimeters |
| Batteries  | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #281,779 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1,000 in Men's Wrist Watches |
| Brand Name | Casio |
| Case Diameter | 54.7 Millimeters |
| Case Material Type | Stainless Steel |
| Case Thickness | 13.5 Millimeters |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | Mineral Crystal |
| Customer Reviews | 4.6 4.6 out of 5 stars (521) |
| Date First Available  | September 25, 2022 |
| Department  | mens |
| Dial Color | Digital |
| Display | Digital |
| Embellishment Feature | Crystal |
| Face Style | Crosshair |
| Global Trade Identification Number | 00889232328102 |
| Item Type Name | Watch |
| Item Weight | 0.23 Kilograms |
| Item model number  | PRG-340-3CR |
| Manufacturer | Casio |
| Manufacturer  | Casio |
| Manufacturer Part Number | PRG-340-3CR |
| Model Name | PRG340T-7 |
| Model Number | PRG-340-3CR |
| Package Dimensions  | 4.84 x 4.61 x 3.43 inches; 8.15 ounces |
| Pattern | Solid |
| Power Source | Solar Powered |
| Series Number | 340 |
| Shape | Round |
| Sport Type | Walking |
| Strap Type | Two Piece Strap |
| Style Name | PRG-340-3CR |
| Theme | Sports |
| UPC | 889232328102 |
| Warranty Type | Limited |
| Watch Movement Type | Tough Solar |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |

## Images

![PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time - Image 1](https://m.media-amazon.com/images/I/61LX8+MvRZL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it have a step counter?**
A: If you want a Casio watch with a step counter, you can look at the GBD100 or 800 series.

**Q: Does it really gain 2 seconds a week??? That would make this watch trash ....**
A: Mine hasn't! Keeps accurate time.

**Q: Dose time update when you travel?**
A: No. You have to physically update time or date if traveling across different time zones or cross international date line.

**Q: What actually is Tough Solar  ?does Tough solar have a battery ?**
A: Yes there is a battery that is rechargeable. It is recharged by the solar cell so you never have to replace it.  As long as the watch sees some light once in a while it will keep running without having to worry about changing a battery

## Customer Reviews

### ⭐⭐⭐⭐⭐ Yet another classic win for Casio. Checks all the boxes.
*by G***I on August 29, 2025*

This watch was a replacement for my 12 year old Casio Pro Trek PRW 3500. The new watch is lighter, thinner and the buttons are easier to activate. I love the rugged and functional looks of this watch. Also, unlike the Apple Watch, you don't need to worry about recharging the battery, it's solar powered. A big plus if you plan to be somewhere that does not have access to electrical outlets. The only thing missing in this watch vs. the 3500 is atomic auto timing. But with the watch being +/- 15 seconds per month that is no big deal.

### ⭐⭐⭐⭐⭐ Love love love this watch
*by G***O on July 1, 2023*

I've been wearing digital casios since 1981, most recently the G-shock series. However, the G-shock seemed oriented towards very high durability and a military look, which seemed unnecessary. Some of them had features on the face, for example graphic illustration of the passage of seconds or phases of the moon, that seemed decorative rather than useful. These resulted in cluttered faces. The Pro Trek is simple and functional. Date and time are very visible with a glance. Battery with solar replenishment (and a small charge status indicator), no USB charging. My phone will give me global positioning with a bigger format, no need to duplicate with a watch that will just be one more thing needing charging. One drawback is that some of the minor indicators on the face for settings are much too small, but these are ones that are typically set and not adjusted. I love the very visible compass feature (even though my phone does have one), useful in both urban and nature settings. The Pro Trek is fairly large but is more comfortable that my previous smaller G-shock. Sometimes things are just very pleasing, and this is the case for me with the Pro Trek. I've dropped and banged it a number of times and anticipate continued durability even if it's not a G-shock. BTW, Amazon had an unusually good price, which often is not the case.

### ⭐⭐⭐⭐⭐ Really good stuff!!!
*by M***O on November 14, 2025*

This model is a really nice upgrade from my previous Casio altimeter. Although the latter was (and is) great, this new model: - Has larger digits, so it's easier to read (especially for an old geezer like me!) - Has a dedicated, much larger light button that's no longer right next to the adjust button -- so it's MUCH easier to use in the dark! - Has a much brighter night light -- so it's MUCH easier to read at night - Has a really good, functional band (much better than the PITA one on my previous model) I'm VERY happy with it -- definitely 5 stars for this one!!

## Frequently Bought Together

- Casio PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time
- Casio G-Shock GWM5610-1 Men's Solar Black Resin Sport Watch
- Casio Men's Pro Trek PRG-270-1 Tough Solar Triple Sensor Multifunction Digital Sport Watch

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-25*