General - Brand: YESIDO. - Model: IO24. Display - Screen size: 2.01 inch. - Resolution: 240 × 296. - HD Touch Screen. - Water Splash-Resistant. Platform - OS: Android 6.0 and more, iOS 9.0 and more. - APP: VFit. Connectivity features - Bluetooth version: 5.0 Technical Specifications - Material: Zinc Alloy. - Main Control: AD7012A6. - Touch Chip: H816D. - Sensor: SC7A20. - Flash: 64MB. Battery - Battery Capacity: 200mAh. - Battery life: About 7-10 Days. - Charging Time: About 4 Hours. - Charging method: Wireless Charging. Activity tracking function - Sports Modes. - Weather Forecast. - Step Count, Calories, And Mileage... - Heart Rate, Blood Oxygen, Blood Pressure... - Sleep Monitoring. - Bluetooth Calls. - NFC Feature. - Reminder Of Long Sitting. - Stopwatch. - Wrist Raise to Wake Screen. - Supports Multiple Languages. - Physiological Assistant. - World Time: View Real-time in Different Time Zones Around the World. - Power Off: Access To Turn Off the Watch. - Restart: Access To Restart the Watch. - Restore Factory Settings: Used To Resolve Software Issues by Restoring - Default Settings. Watch & Band - Material: Silicone. - Changes: Yes. - Number of Band: 2. - Color: - Watch: Black. - Band: Black, Orange.