Zeblaze Vibe 8 Rugged Outdoor Smart Watch 1.43 inch Screen 5 ATM & IP69K Built-in Flashlight 1. Screen: 1.43 inch Ultra HD AMOLED, 466x466 pixels, 326 PPI, up to 1000 nit Brightness，Sapphire Glass Lens 2. Movement Sensor: 3-Axis Accelerometer and 3-Axis Gyroscope Sensor 3. Health Sensor: New OHR fusion biometric sensor 4. Health Monitor: Wrist-based Heart Rate, Blood Oxygen, Blood Pressure Measurement 5. Connection: BLE 5.3 6. Battery Capacity: 500mAh Li-polymer battery 7. Working time in Battery Saving Mode: up to 60 days 8. Working time in Typical Usage Scenario: up to 30 days 9. Working time in Heavy Usage Scenario: Up to 18 days 10. Theoretical Charging Duration: Approx. 1.5 hours Magnetic Charging 11. Health Features: Wrist-based Heart Rate (Constant, Every Minute), Daily Resting Heart Rate, SpO2(Blood Oxygen) Level Measurement, Blood Pressure, Breathing Training, Women's Health, Sleep Score and Insights, and Calorie Burn Tracking 12. Daily Features: Voice Calling, Voice Assistant, Smart Notifications(Call, Text, Gmail, and Smartphone App Notifications), Weather Sync, Controls Smartphone Music and Camera, Find My Phone and Watch, Do Not Disturb Modes, Sedentary alert. Drink water reminder, Calendar, Calculator, Business Card, Activity Tracking Features, Clock Features, Flashlight, Sport Modes 13. APP: FitCloudPro (Android 5.0 or iOS 10 and above) 14. Language Support: Watch System: English, German, Russian, Spanish, Portuguese, French, Japanese, Arabic, Dutch, Italian, Czech, Greek, Hebrew, Malaysian, Polish, Vietnamese, Finnish, Turkish, Simplified Chinese APP: English, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Dutch, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croatian, Albanian, Turkish, Ukrainian, Hindi, Simplified Chinese, Traditional Chinese Message Push: English, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Dutch, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croat