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Battery
Charging Wireless Wireless, 0-80% in 45 min
Type Li-Ion 530 mAh Li-Ion 309 mAh (1.19 Wh)
Body
Build Glass front, ceramic back, stainless steel frame Glass front, ceramic/sapphire crystal back, aluminum frame
Dimensions 46.2 x 46.2 x 10.9 mm (1.82 x 1.82 x 0.43 in) 45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
SIM eSIM eSIM
Weight 48 g (1.69 oz) 32 g (41mm), 38.8 g (45mm) (1.13 oz)
  50m water resistant 5 ATM Compatible with standard 22mm straps IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models)
Camera
  No No
Comms
Bluetooth 5.2, A2DP, LE 5.0, A2DP, LE
NFC Yes Yes
Positioning GPS, GLONASS, BDS, GALILEO, QZSS GPS, GLONASS, GALILEO, QZSS, BDS
Radio No No
USB No No
WLAN Wi-Fi 802.11 b/g/n (market/region dependent) Wi-Fi 802.11 b/g/n, dual-band
Display
Protection - Ion-X strengthened glass
Resolution 466 x 466 pixels (~310 ppi density) 484 x 396 pixels (~326 ppi density)
Size 1.5 inches 1.9 inches
Type AMOLED Retina LTPO OLED, 1000 nits (peak)
Features
Sensors Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature) Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max
  - Ultra Wideband (UWB) support
Launch
Announced 2023, May 10 2021, September 14
Status Available. Released 2023, June 22 Available. Released 2021, October 15
Memory
Card slot No No
Internal 32GB 2GB RAM 32GB 1GB RAM
  - eMMC 5.1
Misc
Colors Black Starlight, Midnight, Blue, Green, Red
Models ARC-AL00 A2473, A2474, A2475, A2476, A2477, A2478, watch6,6, watch6,7, watch6,8, watch6,9
SAR - 1.10 W/kg (head)    
SAR EU - 0.70 W/kg (head)     1.50 W/kg (body)    
Network
2G bands N/A GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1800 / 1900 / 2100 / 800 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International
4G bands LTE 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International
Speed HSPA, LTE HSPA, LTE
Technology HSPA / LTE GSM / HSPA / LTE
  - 1, 2, 3, 4, 5, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
Platform
Chipset Qualcomm Snapdragon W5 Gen 1 (4 nm) Apple S7
CPU Quad-core 1.7 GHz Cortex-A53 Dual-core
GPU Adreno 702 PowerVR
OS HarmonyOS 3.0 watchOS 8.0, upgradable to watchOS 11.5
Sound
3.5mm jack No No
Loudspeaker Yes Yes
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