Realization of globa 藍 rad 玉 o control 五 ed watch , lCal . U6001 , Takayuki HASUMI and Haruhiko HIGUCHI CITIZEN WATCH CO . , LTD . Watch Deve艮 opment Dept, ABS τRACT W ・ . put gl ・b・1皿 di・ tim・ ・ign ・1 " C ・1 ・ U600 " ・n 伽 ・ m 肛 k・t・in ・Jun ... 2007 ・ Tb・ p ・・f ・rmance ・f 血 ・ high・en ・ id・ity that can be the electric wave reception 血 the Nor重 h America conthlent is installed in this watch . 1 ℃ a1 . U600 「 ' is achieved operativeness and the visibili 鍬 by installing of thc combinations display

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... the winding stem and the pushbut し ons . This wristwatch bas the f ction that is cal 亘 ed " lmpact detection 負mction " . This fUnction puts the electromagnetic brake on the motor when the impact is detecte { 1. As a result, it has the display means of high reliability tO the iimpact in this wristwatch . Moreever , the sensor is not needed ' because the impact has beeri detected with the stepPing motoL