38mm
Second Generation OLED Retina display with Force Touch | 272 by 340 pixels
Custom S3 System in Package with Dual-core processor
Accelerometer, Built-in heart rate sensor, Gyroscope, Barometric Altimeter
GPS | 802.11b/g/n 2.4GHz | Bluetooth 4.0 | LTE in Cellular Version
Requires iPhone 6 or later
Upto 50 Meters
Silver, Gold, Rose Gold, or Space Gray