It is a digital model PRW-30 that can be operated intuitively from the PRO TREK climber line. A large direct button that can measure direction, barometric pressure / altitude, and temperature with one push is placed on the right side of the clock, and the measurement results are digitally displayed numerically. An icon indicating the direction, altitude, and barometric pressure is used near each button so that the function can be recognized instantly, allowing intuitive measurement and grasp of necessary information even in harsh outdoor scenes. In addition, STN liquid crystal display and bold font are used to improve visibility. In addition to the measurement function, it is equipped with basic performance such as tough solar, radio wave reception function, and water resistance to 10 bar, and can be used even in harsh scenes. In addition, it has been made smaller and lighter so as not to interfere with the movement of the wrist. In addition, a Dura soft band with improved durability is used. The wearability has been improved so that it can be worn for a long time during mountain climbing and outdoors.