MW10G COMBO - Wireless Heart Rate (ANT+) - Wireless RPM+Speed (ANT+) combo - ANT+ Sport 2.4G digital wireless system - It Ensures no interference and cross-talk - It offers the most stable and precise signals - Up to 30 laps of memory, which helps professional training - Calculate with input-user-data for precise record - Beep reminder - LCD brightness adjustable - Low battery indicator - Excellent waterproof