Screen: AMOLED color screen | Resolution: 194 x 368 pixels | Size: 1.47 inches Connectivity: Bluetooth: 2.4 GHz, BT5.0, BLE Sensor: 6-axis IMU sensor (Accelerometer sensor, Gyroscope sensor) | Optical heart rate sensor Water Resistant: 5 ATM water-resistant Material: Wrist strap: Silicone rubber System requirements: Android 6.0 or later | iOS 9.0 or later

The stainless steel case is durable and polished to a shiny, mirror-like finish. The Sport Band is made from a durable yet surprisingly soft high-performance fluoroelastomer, with an innovative pin-and-tuck closure.

The aerospace-grade titanium case strikes the perfect balance of weight, durability and corrosion resistance. The rugged Alpine Loop is made from two textile layers woven together into one continuous piece without stitching, with a titanium G-hook to ensure a secure fit.

The aerospace-grade titanium case strikes the perfect balance of weight, durability and corrosion resistance. The Ocean Band is moulded in a high-performance elastomer with a tubular geometry allowing it to stretch for a perfect fit, even over a wetsuit. The titanium buckle and adjustable loop secure the strap during high-speed water sports.