Battery life: 135mah battery capacity built in the mi band 4, max working time up to 20 days after a full charging.
Health monitoring: support heart rate monitoring, heart rate alerts, sleep monitoring, idle alerts; monitoring your health data o matain your healthier body
activity tracking: comes with 6 workout modes: treadmill, exercise, outdoor running, cycling, walking, swimming counting step, distance, calories burned during sports
5atm water resistant: up to 50 meters water resistant rate, freely to wear mi band 4 when running and exercising
display: 0. 95-inch colorful amoled display with 120 x 240 pixels resolution, up to 450 nits screen brightness
Condition: Brand New