8GB Capacity/ Built-In GPS, GLONASS, Galileo, And QZSS/ S3 With Dual-Core Processor/ W2 Apple Wireless Chip/ Barometric Altimeter/ Optical Heart 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 5/ Space Gray Aluminum Case With Black Sport Band Finish