| 摘要 |
A drop detection part that detects drop of the device into the water, a light emitting body disposed in the housing, and a light-emission control circuit that makes the light emitting body emit light when the drop detection part detects the drop into the water are provided, and the rear face of the housing is made translucent, a lower part of a sealing member sealing the front housing and the rear housing is also made translucent, and a cover part covering the light emitting body is formed on this translucent part.
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