Batteries only last 3 nights
This item takes (2) A610 watch batteries. When you turn it on, a LED stays on the entire time the unit is on. So, we were turing the collar on every night, placing it on our dog, and removing it the next morning. The batteries only lasted three nights. I can't find A610 watch batteries anywhere. The battery door is not waterproof. You have to put a piece of tape over the door to keep water out.
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