The Casio ProTrek PRG-601-1 is a rugged outdoor men's watch designed for adventurers and outdoor enthusiasts. This 51.5mm timepiece features a stainless steel and bio-based resin case with a comfortable black bio-based resin strap made from renewable organic resources like castor oil plants and corn.

The watch is powered by Tough Solar technology, converting any light source into energy to keep the watch running without battery replacements. It features a comprehensive triple sensor system that includes a digital compass for navigation, altimeter and barometer for elevation and weather tracking, and thermometer for temperature monitoring. The mineral glass crystal protects the black analog-digital dial, which includes raised index numbers for enhanced visibility.

Additional features include double LED light for nighttime readability, full auto calendar, world time function, 1/100 second stopwatch, countdown timer, five daily alarms, and both 12/24 hour format options. The watch is water resistant to 100 meters, making it suitable for swimming and water sports. The 23mm wide bio-based resin bracelet secures with a reliable buckle clasp. With a case thickness of 14.8mm, this eco-friendly watch combines bold aesthetics with practical functionality for outdoor adventures.