Leather Watch band & fluorine Rubber Watch BandColor: blackDisplay size: 1.34″, 320*300 pxAlways-on reflective color LCD touch screen, Corning gorilla glassWeight: 54.5gProcessor: 1.2 GhzStorage: 4GB RAM: 512MBConnection: Bluetooth 4.0 / BLE + WiFiBattery life: 290mAh Li-Polymer Battery, 5 days regular use / 11 days basic useWater resistance: 5 ATM, 50m water proofHeart rate sensor: Optical (PPG)GPS + GLONASSMultisport tracking, heart rate monitoring, notifications, onboad music