Amazfit T-Rex Pro User Manual Contents Operating Instructions and Function Navigation 3 Basic Operations 3 Touch Screen 3 Physical Buttons 5 Daily Operations: 5 Operations while working out 6 Function Navigation 7 Watch Wearing and Charging 8 Before Use 10 Device Pairing and Unpairing 10 Shortcut Control 11 Flashlight 11 Brightness Adjustment 12 DND Mode 12 Battery Saver Mode 13 Theater Mode 14 Activities and Health 14 PAI 14 Activity goal 15 Idle alert 15 Heart Rate 16 …