The smartwatch comes with a 1.78-inch display with approx 60.0% screen-to-body ratio. Watch Series 4 Aluminum is powered by Apple S4 processor and also Ion-X strengthened glass, - 3D Touch display, 1000 nits. The smartphone packs internal 16GB of internal storage that can not be expanded. As for the cameras are concerned, there have no cameras. Apple Watch Series 4 Aluminum runs WatchOS 5.0 and Sensors on the phone having accelerometer, gyro, heart rate(2nd generation), barometer. Non-removable Li-Ion battery. As for the Connectivity options include Wi-Fi, GPS, Bluetooth, no USB, NFC, no FM, 3G and 4G LTE.