Brand: Xiaomi Amazfit Model: Bip U Pro Screen: Type: Transflective Touch TFT Size: 1.43 " Resolution: 320 x 302 px Brightness level: Fixed Glass: 2.5D Curved Connectivity: Bluetooth: Yes, 5.0 BLE WiFi: No 2G / 3G: No GPS: Built-in GPS NFC: No Compatible with Android 4.4 or higher and iOS 8.0 or higher Microphone: Yes Speaker: No It allows you to control music playback on your phone Vibration: yes MiFit APP (Android and iOS) Interface: Physical button: Long press off: Turn on Short press on: Activate screen - Standby Long press on: Turn off Charging Slot: Inductive charging connector Resistance: 5 ATM (we recommend not to submerge it) Camera: No Sensors: Heart rate sensor: Yes, BioTracker 2 PPG Biological Optical Sensor Accelerometer: Yes Gyroscope: Yes Geomagnetic Sensor: Yes GPS: Yes Blood oxygen level sensor: Yes Functions: Call alert SMS alert Application alert: (Facebook, Whatsapp, Twitter, Telegram, etc ...) Clock Calendar Synchronization: Push - Manual GPS locator Distance meter Pulsometer Step counter Sedentary reminder Weather forecast Running mode Speedometer Calorie burn control Sleep control Alarm Data history Sport modes: more than 60 Battery: Capacity: 230 mAh Autonomy duration average use: Up to 9 days Charging type: Wireless charging Charging time: 2 hours Design: Material: Ceramic / Silicone Dial: Square - Silicone / Ceramic Strap: Silicone Dimensions: 40.9 x 35.5 x 11.4 mm Weight: 31 gr (with strap) Colour: Pink, Turquoise, Black Packing content: 1 x Xiaomi Amazfit Bip U Pro 1 x Charging base 1 x USB Charging Cable 1 x User Manual