Comfortable and washable Chest Belt for Heart Rate function.

Compatible with all ANT+™ and BLE 4.0 wireless enabled devices including GPS-100, GPS-200, MR-Fit, and MR-Connect computers.

Accurate Heart Rate measurement.
BLE 4.0 and ANT+™ wireless technology.
Works with most apps, smartphones, and cycle computers.
Replaceable CR2032 coin cell battery that lasts up to 20 months.