Pro Trek

Pro Trek was born in 1995 with the DPX-500, the line's first watch and the first to integrate the so-called Triple Sensor: a single module capable of measuring direction (compass), atmospheric pressure and altitude, and temperature, achieved through high-density mounting techniques that managed to fit magnetic, pressure and thermal sensors into a space compatible with a wristwatch. A non-trivial technical feat for the mid-1990s, which immediately placed Pro Trek in a different category from ordinary rugged digital watches: a measuring instrument first, a timepiece second.

From 2000 Casio reoriented the line's development toward a design more genuinely usable in the field, drawing on direct input from mountaineers and mountain experts involved in the design process — an approach that in 2007, for example, led to the PRW-1300, made slimmer on the suggestion of mountaineer Hirotaka Takeuchi. In 2002 came Tough Solar charging (debuting on the PRG-50), which drastically reduced the problem of battery replacement in extreme conditions, and in 2005 radio-controlled signal reception on the PRW-1000, for time accuracy independent of manual adjustment.

In 2009 Casio launched the flagship Manaslu line, named after the Himalayan peak of the same name and representing the technological and aesthetic pinnacle of the Pro Trek range; 2013 brought the third generation of the Triple Sensor, more precise and miniaturized, while from 2022 the line began incorporating bio-based resins with a view to greater sustainability. 2025 marked Pro Trek's thirtieth anniversary, celebrated while maintaining the same approach as its origins: a watch designed first and foremost to be genuinely used in the mountains.