Languages Included English and Chinese.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 bodyActivity Tracking: Comes with 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, swimming Counting step, distance, calories burned during sports5ATM Water Resistant: Up to 50 meters water resistant rate, freely to wear Mi Band 4 when running and exercisingDisplay: 0. 95-inch Colorful AMOLED display with 120 x 240 pixels resolution, up to 450 nits screen brightness
