What's that in your shiny new Apple Watch?

Second-generation OLED Retina display with Force Touch

Consistent with the original Apple Watch, the Series 3 comes in two sizes: 38 mm (272 × 340 pixels, 290 ppi) and 42 mm (312 × 390 pixels, 302 ppi).

Custom-designed Apple S3 SiP (System in Package)

Optional LTE and UMTS, built in GPS/GLONASS + NFC + Wi-Fi 802.11b/g/n 2.4 GHz + Bluetooth 4.2

Accelerometer + gyroscope + heart rate sensor + microphone + speaker + barometric altimeter + ambient light sensor

Water resistance rating (up to 50 meters)

WatchOS 4