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Apple Watch Series 4

Apple Watch Series 4, also known as Apple Watch S4, is a smart watch owned by Apple. It was officially released at the Apple Autumn New Product Launch in September 2018. It is equipped with watch OS 5 to display more notifications and content, with a larger display and Smaller border.Here is its main parameter:

Announced 2018, September
Status Available. Released 2018, September
Dimensions 44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in)
Weight 48 g (1.69 oz)
Build Stainless Steel frame; all-ceramic/sapphire crystal back
SIM Electronic SIM card (eSIM)
50m waterproof
ECG certified (USA only)
Type LTPO OLED capacitive touchscreen, 16M colors
Size 1.78 inches, 10.0 cm2 (~60.0% screen-to-body ratio)
Resolution 448 x 368 pixels (~326 ppi density)
Protection Sapphire crystal glass
3D Touch display
1000 nits
OS watchOS 5.0, upgradable to 5.1.3
Chipset Apple S4
CPU Dual-core
Card slot No
Internal 16 GB
Loudspeaker Yes
3.5mm jack No
WLAN Wi-Fi 802.11 b/g/n
Bluetooth 5.0, A2DP, LE
Sensors Accelerometer, gyro, heart rate (2nd gen), barometer
Audio player
Photo viewer
Siri natural language commands and dictation (talking mode)
Non-removable Li-Ion battery
Stand-by Up to 18 h (mixed usage)


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