APPLE iWatch Series 4, 40mm cellular

Generation4 ,Single header

• 40 x 34 x 10.7 mm (1.57 x 1.34 x 0.42 in)
• LTPO OLED capacitive touchscreen, 16M colors
• 1.57 inches, 7.8 cm2 (~57.0% screen-to-body ratio)
• 394 x 324 pixels (~326 ppi density)
• Wi-Fi 802.11 b/g/n, Bluetooth: 5.0, A2DP, LE
• Accelerometer, gyro, heart rate (2nd gen), barometer
• Non-removable Li-Ion battery, Up to 18 hour