I bought one of these, and it works great, the only problem I had was when my son got into the shower with the alarm around his neck. It will rust. I took it apart cleaned it with alcohol, and it will work for a while until the next time. I ordered another one, and the battery was dead. Now I would like to buy a replacement battery, but have no idea what to buy.I looked on line, but they all look too big. Please someone help.
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