---
product_id: 461830726
title: "PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time"
price: "€ 416.70"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/461830726-prg340-series-pro-trek-100-meter-water-resistance-compass-alt
store_origin: FI
region: Finland
---

# 100M Water Resistance - adventure-ready Tough Solar Power - endless energy Triple Sensor v3 - compass, altimeter, barometer PRG340 Series | Pro Trek | 100 Meter Water Resistance | Compass | Alt/Baro-Thermo | Tough Solar Power | 1-100 SEC Stopwatch | Countdown Timer | World Time

**Price:** € 416.70
**Availability:** ✅ In Stock

## Summary

> 🌟 Gear up with the Pro Trek PRG340 — where smart tech meets unstoppable adventure!

## 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
- **How much does it cost?** € 416.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/461830726-prg340-series-pro-trek-100-meter-water-resistance-compass-alt)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Solar-Powered Freedom:** Harness sunlight for uninterrupted performance—no charging anxiety.
- • **Precision Triple Sensor:** Navigate and monitor altitude, weather, and direction with expert accuracy.
- • **Enhanced Night Visibility:** Super Illuminator with full auto LED ensures you never lose track, day or night.
- • **Eco-Conscious Craftsmanship:** Built with eco-friendly 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 Series Pro Trek is a solar-powered, eco-friendly outdoor watch featuring a Triple Sensor (digital compass, altimeter, barometer, thermometer), 100-meter water resistance, a rotating bezel, and a super bright auto LED light. Designed for professionals and adventurers alike, it offers precise world time, stopwatch, and countdown timer functions in a rugged yet lightweight design.

## Description

Buy Casio PRG340 Series | Pro Trek | Black | 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: Really good stuff!!! - 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!!
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.

## 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  | B09Z4PKCTY |
| Batteries  | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #320,199 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1,395 in Men's Wrist Watches |
| Customer Reviews | 4.6 4.6 out of 5 stars (510) |
| Date First Available  | September 22, 2022 |
| Department  | mens |
| Item model number  | PRG-340-1CR |
| Manufacturer  | Casio |
| Package Dimensions  | 7.17 x 5.67 x 3.62 inches; 7.37 ounces |

## 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/81pJv1tGbhL.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

### ⭐⭐⭐⭐⭐ 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!!

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ I bought the PRG340 instead of...
*by V***O on April 24, 2025*

I bought the PRG340 to replace my old SGW300H (battery powered with dual sensor barometer/altimeter and temperature) that failed after several years. It served me well as a rugged watch and one that was useful on mountain hikes. That watch was only $35-$40! I didn't see a newer Casio model like it, so I started considering any watch type. I ruled out an Android watch and other smart watches as I do not want to deal with recharging my watch frequently. I considered the Garmin Instinct Solar which looks even better in looks and features than this Casio, but reviews revealed that the battery fails to hold it's charge after about two years. That Instinct cannot be powered by solar alone. So it came down to the Casio PRG 270 and this 340. For $40 more, the 340 provides me a better looking watch for my taste, the dual level screen for the compass marks over the numerical watch face, and the rotating bezel for compass work. Other than that the features are the same, so get the 270 if you like its looks better and don't care about the enhanced compass features. Check out detailed reviews and the Casio instructions online for the cool trek mode and its capture of max/min elevation, total ascent/descent, waymark readings, etc. As someone else said, it's a great dumb watch.

## 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 PRG600 Series | Pro Trek | 100M WR | 1/100 SEC Stop Watch | Compass/Alt/Baro-Thermo | Tough Solar Power/Atomic Timekeeping | 1-100 SEC Stopwatch | Countdown Timer | World Time

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-01*