Case Size: 42.5 x 36.4 x 11.4 mm (1.67 x 1.43 x 0.45 in)
Display: OLED capacitive touchscreen, 16M colors, 1.65 inches, 390 x 312 pixels
Lunch: 2017, September
OS Processor: Dual-core, Apple S3, watchOS 4.0, upgradable to 5.1.3
Sensor: Accelerometer, gyro, heart rate, barometer, Siri natural language commands and dictation (talking mode)
Battery: Non-removable Li-Ion 279 mAh
