Replacement battery
Part#: CR2025
Compatible with any type of pedometer, heart rate monitor transmitters, calculator, electronic notebook, PC card, medical equipment and memory back-up power sources that use a CR2025 battery. Check your product's manual to verify.
Also compatible with Polar Wearlink, Polar H7, Wearlink Nike+, Wearlink Bluetooth, Wearlink Hybrid chest transmitters.