Top specifications
Heart rate sensor
Yes
Near Field Communication (NFC)
Yes
Device warranty
24 months
Battery capacity
40mm: 284mAh
44mm: 410mAh
45mm: 590mAh
44mm: 410mAh
45mm: 590mAh
Body
Dimensions (mm)
40mm: 39.3x40.4x9.8 (HxWxD)
44mm: 43.3x44.4x9.8 (HxWxD)
45mm: 45.4x45.4x10.5 (HxWxD)
44mm: 43.3x44.4x9.8 (HxWxD)
45mm: 45.4x45.4x10.5 (HxWxD)
Buckle type
Aluminum
Band type
FKM RUBBER
Rear Case
Polyamide (PA) + Glass Fiber Gorilla Glass
Front Case
Aluminum Sapphire Crystal
Weight (g)
40mm: 28.7
44mm: 33.5
45mm: 46.5
44mm: 33.5
45mm: 46.5
Battery
Removable battery
No
Wireless charging
Yes - WPC Wireless Charging
Battery capacity
40mm: 284mAh
44mm: 410mAh
45mm: 590mAh
44mm: 410mAh
45mm: 590mAh
Connectivity
Bluetooth
Yes
Near Field Communication (NFC)
Yes
Wi-Fi
Yes
Processor
Processor
Exynos W920 (Dualcore, 5nm)
Display
Pixels
330PPI
Type
Super AMOLED
Size (inches)
40mm: 1.2
44mm: 1.4
45mm: 1.4
44mm: 1.4
45mm: 1.4
Platform
Operating system
Wear OS 3.5 (Powered by Samsung)
Sensors
Accelerometer
Yes
Digital compass
Yes
Ambient light sensor
Yes
Gyroscope
Yes
Barometer
Yes
Blood oxygen levels
Yes
Heart rate sensor
Yes
Memory
RAM
1.5GB
Device memory
16GB
Features
Samsung Pay
Yes
Loudspeaker
Yes
GPS
Yes
Compatible With
Google Assistant
Google Pay
Yes
Waterproof
5ATM/IP68/MIL-STD-810H
Always On
Yes
Compatibility
Compatibility
Compatible with Android 6.0 or higher, RAM 1.5GB above
Not compatible when your phone doesn't support Google Mobile Service
Not compatible when your phone doesn't support Google Mobile Service
Virtual assistant
Bixby
Yes
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