Features:•  Built-in GPS and GLONASS•  Faster dual-core processor•  W2 chip•  Barometric altimeter•  Capacity •  Heart rate sensor•  Accelerometer and gyroscope•  Water resistant 50 meters•  Ion-X strengthened glass•  Composite back•  Wi-Fi (802.11b/g/n 2.4GHz)•  Bluetooth 4.2•  Up to 18 hours of battery life•  watchOS 4  Chip Faster dual-core processor Apple wireless chip Features Built-in GPS and GLONASS Barometric altimeter Water resistant 50...

Color Band: Platinum / Black Case: Aluminum Case Features:•  Built-in GPS and GLONASS•  Faster dual-core processor•  W2 chip•  Barometric altimeter•  Capacity 8GB•  Heart rate sensor•  Accelerometer and gyroscope•  Water resistant 50 meters•  Ion-X strengthened glass•  Composite back•  Wi-Fi (802.11b/g/n 2.4GHz)•  Bluetooth 4.2•  Up to 18 hours of battery life•  watchOS 4 

Chip Dual‑core processor Built‑in GPS Features Built-in GPS Water resistant 50 meters1 Wi-Fi (802.11b/g/n 2.4GHz) Bluetooth 4.0 Heart rate sensor Accelerometer Gyroscope Ambient light sensor Display Second-generation OLED Retina display with Force Touch2× brighter (1000 nits) Sapphire crystal (stainless steel and ceramic cases) Ion-X glass (aluminum cases) 312 by 390 pixels (42mm) Power and Battery Built-in rechargeable lithium-ion battery Up to...