AIR PUMP, AIR CHAMBER DEVICE, AND WRIST WATCH PROVIDED WITH AIR CHAMBER DEVICE

摘要

There is realized a wrist watch provided with an air chamber device realizing a small-sized air pump having a simplified constitution, attaching the pump to an air chamber and having an excellent performance of fitting to the arm. A through hole (1a) is provided at a position of an air pump (1) depressed by the finger to thereby dispense with a valve at an outside air introducing portion of the pump. An air chamber device (10) capable of easily introducing and discharging air is mounted to a back cover side of a wrist watch. One end of the air chamber device is provided with the air pump (1) and other end thereof is provided with an air discharge valve (3). <IMAGE>