Original Second-Hand for A-pple Watch Series 7 8 9 10 Waterproof Smart Watch Compass IOS Feature Sizes 41mm 42mm 45mm 46mm

Watch Series 8
Product type sports watch, health Monitoring watch
Applicable people, adults
Dial diameter 41mm 45mm
The screen size is 1.75 inches
The dial is square in shape
Strap material soft rubber (silicone)
Processor A-PPLE S8 SIP, dual-core
Apple W3 wireless chip
Apple U1 ultra-wideband chip
The fuselage stores 32GB.
Operating system watchos 8
Matching system Android 4.4 and above, i-OS 8.0 and above.
Hardware parameters
WiFi support
Bluetooth support
NFC support
Protection level waterproof level 5atm (50m waterproof), IPX6 waterproof level.
Speaker support
Microphone support
Sensor blood oxygen sensor (blood oxygen app)
Electrode heart rate sensor
The Third Generation Optical Heart Rate Sensor
Acceleration sensor (range up to 32g-force, supporting fall detection)
gyro
Ambient light sensor
monitor
Screen type All-weather Retinal Display (LTPO OLED)
Screen resolution 352x 430px
Other screen parameters 1000nits
Functional application
Other functional electrocardiogram detection
Heart rate monitoring support
Blood oxygen monitoring support
Appearance parameter
Case material aluminum metal case
Control type Touch, knob (digital crown with tactile feedback function), keys
Power supply parameters
Charging method magnetic charging