CASIO PRO TREK PRJB001EX-1D
Key Specifications & Features
- Innovative Reversible Cloth Band: The defining feature of the EX-1D variant is its unique, tactical reversible cloth band. One side features integrated storage compartments meant for holding small trail essentials like keys or cash, and the design is fully compatible with carabiners for pack-mounting.
- Rotary Guard Bezel: It features Casio’s first-ever 45-degree rotating guard bezel. When aligned squarely, it presents an angular look that protects the buttons from accidental presses. A quick 45-degree turn shifts it to a rounded shape, exposing the buttons for quick access on the trail.
- Power & Connectivity: Equipped with Tough Solar power, the watch continuously charges from both sunlight and indoor light. It includes Bluetooth Mobile Link via the CASIO WATCHES App, enabling automatic time synchronization across 300+ cities, phone tracking, and a “Time & Place” activity logging tool.
- Environmental Build: The case, case back, and components are constructed using eco-friendly bio-based resins (biomass plastics). Despite its rugged nature, the series is renowned for being exceptionally lightweight and comfortable for long treks.
- Core Survival Specs: Built to withstand harsh outdoor environments, it features 100-meter water resistance and low-temperature resistance down to -10°C (14°F). It also sports a dual Super LED illuminator, a 1/100-second stopwatch, a countdown timer, and 5 daily alarms.

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