Watch Series 4

Display

Screen size 1.8 in

Panel type Retina LTPO OLED, 1000 nits (peak)

Resolution 448 x 368 pixels (~326 ppi density)

Screen protection Sapphire crystal glass

Performance

Chipset Apple S4

CPU Dual-core

GPU PowerVR

RAM 1 GB

Storage 16 GB

Expandable storage (microSD) No

OS platform Other

Operating system (version) watchOS 5.0, upgradable to 9.2

Camera

Optical image stabilization (OIS) No

Battery & Charging

Battery capacity 292 mAh

Wireless charging Yes

Reverse wireless charging No

Build

Weight 48 g

Dimensions 44 x 38 x 10.7 mm (1.73 x 1.50 x 0.42 in)

Build materials Glass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frame

Colors available Space Black, Silver, Gold

SIM type eSIM

Connectivity

5G support No

Bluetooth version 5.0, A2DP, LE

Wi-Fi standard Wi-Fi 802.11 b/g/n

NFC Yes

GPS / satellite positioning Yes

Charging port No

3.5mm headphone jack No

FM radio No

Release

Release date Sep 2026