| 摘要 |
PROBLEM TO BE SOLVED: To provide a watch, with a built-in Bincho charcoal sheet, in which moisture is absorbed by the Bincho charcoal sheet mounted at the inside evwn ehen the moisture creeps to the inside of the watch, which protects a movement from the moisture and which prevents a failure. SOLUTION: In this watch, a Bincho charcoal sheet 2 is installed at the inside of the back lid 1 of the watch. Then, the back lid 1 is attached to a wathch body 3. When moisture creeps into the gap of the back lid 1 or the gap of a crown 4 while the watch is attached to an arm so as to be used, the Bincho charcoal sheet 2 which is built in absorbs the moisture, and it is possible to prevent a movement 5 from being covered with the moisture.
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