Features:

• Strap Type: Flexible
• Adjustable Strap Length:130–205mm
• 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
• Battery Capacity: 100mAh
• Required Adapter Power: 5V 200mA
• Charging Method: Contact
• Maximum Use Time: 12 days
• Supported Operating Systems: 
• Android 6.0 or higher
• iOS 12.0 or higher
• Chip: Apollo3
• Storage: 16 MB
• Bluetooth Version: BLE 5.0
• 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
• Water Resistance Rating: 5ATM
• What’s in The Box: 1x Smart band, 1x Instructional Manual