this is the battery compartment ... rain showers but shouldn’t be submerged in water. Instead, Garmin recommends the HRM-Pro heart rate monitor - or you could try the Polar H10 for recording ...

While it collects fewer metrics than the flagship Garmin HRM-Pro, the HRM 200 does connect ... week’s sweat still hanging around. With a battery life that stretches up to a year using a coin ...