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A Guide to the PRO TREK PRG-340 Series!

A Guide to the PRO TREK PRG-340 Series!

The CASIO PRO TREK PRG-340 series stands as a beacon of innovation for outdoor enthusiasts, offering a blend of rugged durability and advanced technology. Engineered to withstand the toughest conditions, these timepieces are built for adventurers who thrive in the great outdoors.

Featuring a host of essential functions, including altimeter, barometer, and compass, the PRG-340 series equips wearers with vital information for navigating through diverse terrains. With its solar-powered system, it ensures reliability even in remote locations, while its water resistance adds another layer of assurance for aquatic adventures. Designed for comfort and functionality, these watches boast a sleek yet robust aesthetic that complements any outdoor gear ensemble.

Unraveling the Spirit of Adventure: CASIO PRO TREK PRG-340 Series

The CASIO PRO TREK PRG-340 Series is a line of rugged outdoor watches designed for adventurers and outdoor enthusiasts. Featuring a tough and durable construction, these watches are equipped with essential outdoor functions such as altimeter, barometer, compass, and thermometer, allowing users to navigate and monitor weather conditions with ease. With a stylish yet practical design, the PRG-340 Series is built to withstand harsh environments while providing reliable performance for outdoor activities ranging from hiking and camping to mountaineering and exploration.


  • 10bar water resistance
  • Solar-powered
  • Digital compass
  • Barometer
  • Altimeter
  • Thermometer
  • Low-temperature resistance (-10°C/14°F)
  • World time (48 cities)
  • Sunrise/sunset time display
  • 1/10-second stopwatch
  • Countdown timer
  • 5 daily alarms
  • Full-auto LED backlight (Super Illuminator)

Bands Crafted from Renewable Materials: Embrace Nature with PRO TREK

Introducing the PRG-340, where sustainable design meets superior functionality. Its band, fashioned from repurposed silicone resin, pairs seamlessly with a bezel, case, and case back crafted from bio-based resin, embodying a commitment to environmental stewardship. Equipped with a triple sensor to monitor natural conditions and the innovative Tough Solar charging system, which harnesses energy from various light sources, including fluorescent lamps, this timepiece is your gateway to the great outdoors.

Dura Soft Band: Repurposed Silicone Resin

Our Dura Soft band is a testament to sustainability. Utilizing reclaimed silicone resin scraps, we've created a distinctive material, blending crushed chips with a base silicone compound. The result? A dual-layered band featuring unique patterns reminiscent of natural landscapes, from rugged stone to fine sand. Please note: due to the nature of the production process, the surface texture may vary.

Eco-Friendly Materials: Bio-Based Resin

In our commitment to minimizing environmental impact, key components of the case, bezel, and case back are crafted from bio-based resin, derived from renewable organic sources. By opting for sustainable materials, we're striving to make a positive difference.

Enhanced Readability: Duplex LCD

The PRG-340 features a dual-layer LCD design, optimizing readability and functionality. While the top layer displays compass graphics with clarity, the bottom layer presents essential timekeeping and measurement data. Furthermore, the slimmer LCD construction reduces bulk without compromising performance.

Innovative Features for Adventure:

  • Rotating bezel and movable lug construction for enhanced usability.
  • Direct function buttons for intuitive operation.
  • Triple Sensor technology (digital compass, barometer/altimeter, and thermometer) to track natural changes.
  • Tough Solar technology for efficient energy conversion from light sources.
  • Super Illuminator with high-brightness full-auto LED backlighting, ensuring readability in low-light conditions.

Experience the harmony of sustainability and performance with the PRO TREK PRG-340—a timepiece that not only honors nature in its materials but also empowers you to embrace the beauty of the outdoors.