This Pro Trek's carabiner-ready strap turns it into a piece of trail gear, not just a watch.
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Casio designed the strap for the Pro Trek PRJ-B001EX-1 Watch first, then envisioned a watch that worked with it. The band unzips into a storage pouch for keys or cash and loops through a carabiner to hang from a backpack or tent. A rotary bezel spins over the buttons to guard against accidental presses on the trail, then rotates back for active use. Solar keeps it charged indefinitely, and a Bluetooth connection to Casio's app logs where and when each outing happened. A genuinely capable outdoor watch, the Pro Trek is water-resistant to 328 feet, rated down to 14°F, with a stopwatch, timer, and an LED backlight for reading the face after dark.
