Top specifications
Heart rate sensor
Yes
Near Field Communication (NFC)
Yes
Battery capacity
Large: 410mAh
Small: 284mAh
Small: 284mAh
Body
Dimensions (mm)
Large: 43.3x44.4x9.8 (HxWxD)
Small: 39.3x40.4x9.8 (HxWxD)
Small: 39.3x40.4x9.8 (HxWxD)
Band type
FKM RUBBER
Buckle type
Aluminum
Front Case
Aluminum Sapphire Crystal
Rear Case
Polyamide (PA) + Glass Fiber Gorilla Glass
Weight (g)
Large: 33.5
Small: 28.7
Small: 28.7
Battery
Removable battery
No
Wireless charging
Yes - WPC Wireless Charging
Battery capacity
Large: 410mAh
Small: 284mAh
Small: 284mAh
Connectivity
Bluetooth
Yes
Near Field Communication (NFC)
Yes
Wi-Fi
Yes
Processor
Processor
Exynos W920 (Dualcore, 5nm)
Display
Pixels
330PPI
Size (inches)
Large: 1.4
Small: 1.2
Small: 1.2
Type
Super AMOLED
Platform
Operating system
Wear OS 3.5 (Powered by Samsung)
Sensors
Barometer
Yes
Blood oxygen levels
Yes
Accelerometer
Yes
Ambient light sensor
Yes
Digital compass
Yes
Gyroscope
Yes
Heart rate sensor
Yes
Memory
Device memory
16GB
RAM
1.5GB
Features
Samsung Pay
Yes
Waterproof
5ATM/IP68/MIL-STD-810H
Always On
Yes
Compatible With
Google Assistant
Google Pay
Yes
GPS
Yes
Loudspeaker
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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