Bluetooth 5.0 Smart Watch - Your health monitor!Features: Sport Functions: 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, pool swimming; Count steps, distance,and calories burned. Health monitoring: Workout completion notifications, goal setting, sleep monitoring, heart rate monitoring, all-day heart rate checking, resting heart rate, heart rate chart, idle alerts. Functions: Alarm, proximity sensor, pre-set watch face, customizable watch face, lock screen, timer, stopwatch, phone alarm and notifications, incoming calls, message notifications, calendar notifications.Specification: Type: Smart Band(Global Version) Screen Size: 0.95" Wrist Strap Material: Thermoplastic polyurethane Adjustable Wrist Strap Length: 155-216 mm / 6.1-8.5 inches Wristband Width: 18 mm / 0.71 inches Water Resistance Rating: 5 ATM Display Type: AMOLED Resolution: 120 x 240 RGB Colour Depth: 24bit Screen Brightness: Up to 400 nits (max brightness), brightness adjustable Touchscreen Type: On-cell capacitive touchscreen Screen Protection: 2.5D tempered glass with anti-fingerprint coating Button: Single Touch Button (wake up, go back) Wrist Strap Type: Removable wrist strap (Mi Smart Band 4 is compatible with Mi Band 3 straps) RAM: 512KB ROM: 16MB Sensors: -3-axis accelerometer + 3-axis gyroscope; -PPG heart rate sensor; -Capacitive proximity sensor Wireless Connectivity: BT5.0 BLE Battery: LiPo, 135mAh Charging Type: 2Pin Pogo Pin Charging Time: 2 hours Standby Time: Up to 20 days Motor Type: Rotor Body Material: Polycarbonate App: Mi Fit System Tequirements: Android 4.4, iOS 9.0 or abovePackage Included: 1 x Smart Wristband 1 x Specialised Charging Cable 1 x User Guide