Polar CR2032 RS400/RS800(CX)/RCX5 Knopfzelle

Swap the battery of your Polar product at home, it doesn't get much easier. This set contains a CR2032 battery and a seal to make sure your Polar product is once again sealed up waterproof.

Tip: 9 out of 10 times, the battery type is denoted on the battery itself. Not sure which type you need? Simply remove the old one from your device and check what code it has.