Size: 42MM, 38MM Series 3 (GPS + Cellular) requires an iPhone 6 / iOS 11 (or later) Network technology: GSM / HSPA / LTE Body dimensions: 42.5 mm x 36.4 mm x 11.4 mm (1.67 x 1.43 x 0.45 in)
Weight: 52.8 g Build: Stainless Steel / Ceramic back SIM: Embedded SIM card (Apple e-SIM) 50m waterproof Display: AMOLED capacitive touchscreen, 16M colors Size: 1.65 inches (~ 55.4 % screen - to - body ratio) Resolution: 390 x 312 pixels (303 ppi pixel density) Multitouch
Yes Operating System: watchOS 4.0 Chipset: Apple S3 CPU: Dual - core GPU: PowerVR Internal: 16 GB, 768 MB RAM Wi - Fi 802.11 b / g / n Bluetooth 4.2, A2DP, LE GPS
Yes, with A-GPS, GLONASS NFC
Yes Sensor: Accelerometer, gyro, heart
rate, barometer