Casio F-201WA-9A

The one that comes pre-set on the watch is for a monitor to check the watch's function or performance. The ones inserted in the factory (for monitors) are consumed from the time the product is shipped until the customer receives the purchase, so it may not last as long as the Japanese manual is written. Check my allergies: There is no confirmation... morefrom the manufacturer or it may not be suitable for those with allergies. Waterproof performance: waterproof for everyday use K-Size:41.0mm×34.0mm Target: Men Be sure to check the detailed product description at the bottom and precautions before purchasing! To request a return or exchange, please note that it is mandatory to provide a video of the unpacking of the package.