Display:

Always-On Retina LTPO OLED display
42mm: 374 x 446 pixels
46mm: 416 x 496 pixels
2000 nits maximum brightness

Processor:

S10 SiP with 64-bit dual-core processor
4-core Neural Engine

Storage Options:

64GB

Battery Life:

Up to 18 hours of normal use
Up to 36 hours in Low Power Mode
Built-in rechargeable lithium-ion battery
Fast charging capable (up to 80% charge in about 30 minutes)

Connectivity:

Wi-Fi (802.11b/g/n 2.4GHz and 5GHz)
Bluetooth 5.3
GPS/GNSS, GLONASS, Galileo, QZSS, and BeiDou
Optional LTE support

Dimensions and Weight:

42mm: 42 x 36 x 9.7 mm, 30g (Aluminium), 34.4g (Titanium)
46mm: 46 x 39 x 9.7 mm, 36.4g (Aluminium), 41.7g (Titanium)

Operating System:

watchOS 11, upgradable to watchOS 11.3

Additional Features:

Blood oxygen sensor (Blood Oxygen app)
Electrical heart sensor (ECG app)
Third-generation optical heart sensor
Temperature sensing
Always-on altimeter
Compass
Accelerometer up to 256 g-forces with fall detection and crash detection
Gyroscope
Ambient light sensor
Depth gauge
Water temperature sensor
Speaker and microphone
Apple Pay
Water resistant up to 50 metres
IP6X dust resistant

Colours:

Aluminium: Jet Black, Rose Gold, Silver
Titanium: Slate, Gold, Natural