Body

• Dimensions: 41 x 35 x 10.7 mm (1.61 x 1.38 x 0.42 in)
• Weight: 31.9 g (1.13 oz)
• Build: Glass front, ceramic/sapphire crystal back, aluminum frame
• SIM: No
• Water/Dust Resistance: IP6X certified, 50m water resistant
• Certification: ECG certified (region-dependent software; hardware available on all models)

Display

• Type: Retina LTPO OLED, 2000 nits (peak)
• Size: 1.69 inches
• Resolution: 430 x 352 pixels (~326 ppi density)
• Protection: Ion-X strengthened glass

Platform

• OS: watchOS 10, upgradable to watchOS 27
• Chipset: Apple S9
• CPU: Dual-core
• GPU: PowerVR

Memory

• Card Slot: No
• Internal Storage: 64GB

Sound

• Loudspeaker: Yes
• 3.5mm Jack: No

Communications

• WLAN: Wi-Fi 802.11 b/g/n, dual-band
• Bluetooth: 5.3, A2DP, LE
• Positioning: GPS, GLONASS, GALILEO, QZSS, BDS
• NFC: Yes
• Radio: No
• USB: No

Features

• Sensors: Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
• Additional Features: Temperature sensing (0.01˚ accuracy), Ultra Wideband (UWB) support (gen2 chip)

Battery

• Type: Li-Ion 282 mAh, non-removable
• Charging: Wireless, 0-80% in 45 min