Hardware and Buttons

• Display

• Digital Crown

• Microphone with voice isolation

• Side button

• Band release button

• Electrical heart sensor

• Speaker/air vent

• Optical heart sensor

Controls

• Digital Crown with haptic feedback

• Side button

• Double tap gesture

• Siri with on‑device processing

Chip

• S10 SiP with 64‑bit dual core processor

• 4‑core Neural Engine

• 64GB capacity

Sensors

• Electrical heart sensor

• Third‑generation optical heart sensor

• Temperature sensor¹

• Compass

• Always‑on altimeter

• High‑g accelerometer

• High dynamic range gyroscope

• Ambient light sensor

• Depth gauge

• Water temperature sensor

Health and Wellness

• ECG app²

• Cycle Tracking app with retrospective ovulation estimates³

• Heart Rate app

• High and low heart rate notifications

• Irregular rhythm notifications⁴

• Medications app

• Mindfulness app with state of mind tracking

• Noise app

• Sleep app including sleep stages

• Sleep apnea notifications⁵

Display

• Always‑On Retina LTPO3 display

• Wide‑angle OLED

• Up to 40% brighter when viewed at an angle

• Edge‑to‑edge display

• Ion‑X front glass (aluminum cases)

• Sapphire front crystal (titanium cases)

• Up to 2000 nits maximun brightness

• 1 nit minimum brightness

• 326 pixels per inch

Audio

• Speaker

• Media playback

Power and Battery Life

• All‑day battery life, up to 18 hours of normal use⁶

• Up to 36 hours in Low Power Mode⁶

• Built‑in rechargable lithium‑ion battery

• Fast‑charge capable⁷

• Up to 80% charge in about 30 minutes⁷

• 15 minutes for up to 8 hours of normal use

• 8 minutes for up to 8 hours of sleep tracking

Operating System

watchOS

watchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected.