http://www.lomonbillions.cn/productinfo/10934/27145 WebOct 16, 2024 · dwjquest. A high resolution scan of an owner's manual for a Seiko 7A38 manual is found below. The operation of all Seiko chronograph functions for the 7A28, 7A38 and 7A48 chronographs is essentially the same. As you will see, zeroing the chronograph hands is done in a manner similar to the Cyma recently discussed.
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