Technical specifications:

Network Technology:

• GSM / HSPA / LTE

Body:

• Dimensions: 45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
• Weight: 31.9 g (41mm), 38.7 g (45mm) (1.13 oz)
• Build: Glass front, ceramic/sapphire crystal back, aluminum frame
• SIM: eSIM
• IP6X certified
• 50m water resistant
• ECG certified (region dependent SW application; HW available on all models)

Display:

• Type: Retina LTPO OLED, 2000 nits (peak)
• Size: 1.9 inches
• Resolution: 484 x 396 pixels (~326 ppi density)
• Protection: Ion-X strengthened glass
• Always-on display

Platform:

• OS: watchOS 10, upgradable to watchOS 11
• Chipset: Apple S9
• CPU: Dual-core
• GPU: PowerVR

Memory:

• Card slot: No
• Internal: 64GB

Camera:

• No camera

Sound:

• Loudspeaker: Yes
• 3.5mm jack: No

Comms:

• 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)
• Temperature sensing (0.01˚ accuracy)
• Ultra Wideband (UWB) support (gen2 chip)

Battery:

• Type: Li-Ion 308 mAh, non-removable
• Charging: Wireless, 0-80% in 45 min (advertised)