Strap Type: Flexible
Battery Capacity : 100mAh
Required Adapter Power : 5V 1A
Maximum Battery Use Time : 2 to 4 days
Adjustable Strap Length:130–205mm around the wrist
Suitable Wrist Circumference: 130-205mm
Approx. Weight: 10.3g (not including strap)
Buttons: None
Screen Type: AMOLED
Screen Size: 1.1in
Resolution: 126 x 294 pixels
Charging Method: Contact
Supported Operating Systems: Android 6.0 or higher; iOS 12.0 or higher
Chip: Apollo3
Storage: 16 MB
Bluetooth Version: BLE 5.0
Warranty: No
Sensors: 3-axis acceleration sensor, optical heart rate sensor, optical SpO2 sensor
Exercise Modes
Health Monitoring Features: Continuous SpO2 monitoring, Sleep monitoring, Real-time heart rate monitoring, Daily activity, Get-up reminders, Breathing exercise.
Other Features: Message notifications, Incoming call notifications, Call rejection, Timer/Stopwatch, Alarms, Weather reports, Music playback control, Camera control, Find my phone

Ultra 3 Smart Watch 7 In 1 Strap

Oppo Band, Health Tracker