From the "PRO TREK" climber line, this model uses sapphire glass and a titanium band for the compact PRW-30 that pursues visibility. Deep ultramarine is deposited on sapphire glass in the image of granite "K2 blue" containing azurite found at the foot of the mountain range K2 (8, 611m), which boasts the second highest altitude in the world. Blue is also applied to the button part to create a design that allows you to feel the magnificent nature. Titanium band and stainless bezel are treated with titanium carbide, and together with sapphire glass, it can withstand hard use outdoors. In addition, it is also easy to use as an outdoor watch by adopting a three-fold type clasp with a lock to prevent it from coming off. Stable drive is achieved by tough solar that charges even the slightest light of fluorescent lamps, including triple sensors. Also equipped with multi-band 6 that supports standard radio waves from 6 stations around the world. It is a model that pursues the finish as a watch with the design theme of natural phenomena.