The button battery of CR2032 is used for the heart rate nonitor, the chest band, which can last about 8 months.
The rechargeable battery is used for Arm band and which can lasts 15 days on a single charge
The button battery of CR2032 is used for the heart rate nonitor, the chest band, which can last about 8 months.
The rechargeable battery is used for Arm band and which can lasts 15 days on a single charge