Network: GSM / HSPA / LTE / 5G

Body

• Dimensions: 49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in)
• Weight: 63 g (2.22 oz)
• Build: Sapphire crystal front, ceramic and zirconia back, titanium frame (grade 5)
• SIM: eSIM
• Certifications & Durability:
  
  • IP6X certified
  • 100m water resistant (22810:2010)
  • 40m swimproof/diving (EN13319)
  • MIL-STD-810H compliant
  • ECG certified (region-dependent software application; hardware available on all models)

Display

• Type: Retina LTPO3 OLED, 3000 nits (peak)
• Size: 1.98 inches
• Resolution: 514 x 422 pixels (~326 ppi density)
• Protection: Sapphire crystal
• Additional Features: Wide-angle OLED

Platform

• OS: watchOS 27
• Chipset: Apple S11
• CPU: Dual-core
• GPU: PowerVR

Memory

• Card Slot: No
• Internal Storage: 64GB

Sound

• Loudspeaker: Yes, with dual speakers (86-decibel)
• 3.5mm Jack: No

Communications

• WLAN: Wi-Fi 802.11 b/g/n, dual-band
• Bluetooth: 5.3, A2DP, LE
• Positioning: GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
• NFC: Yes
• Radio: No
• USB: No

Features

• Sensors:
  
  • Accelerometer
  • Gyro
  • Always-on heart rate
  • Barometer
  • Always-on altimeter (-500m to 9000m)
  • Compass
  • SpO2
  • VO2max
  • Temperature (body)
  • Temperature (water)
  • Depth gauge (±1m accuracy)
• Health Sensing System:
  
  • Third-generation electrical heart sensor
  • Always-on optical heart sensor
  • Blood oxygen sensor
  • Temperature sensor (0.01˚ accuracy)
• Additional Features:
  
  • Ultra Wideband (UWB) support (gen2 chip)
  • Emergency SOS via satellite

Battery

• Type: Li-Ion 631 mAh
• Charging: Wireless, 0-80% in 45 min