LifeTrak Zone R420 Quick Start Manual page 12

FINGER TOUCH HEART RATE
9
1. Wear snugly around your wrist.
2. Gently press and hold VIEW for 3 to 8
seconds until your heart rate appears.
Heart Rate (beats per minute)
% of Maximum Heart Rate
VIEW
Press & hold to read your heart rate
Pulse Indicator
This feature will NOT be available when you are using
your compatible BLE chest belt in Workout Mode.