H59 Screenless BT Smart Bracelet Dual Strap, Support Incoming Call Reminder Health Monitoring About Product: 1. Battery capacity: 150 mAh 2. Bluetooth version: BT5.2 3. Charging method: magnetic charging 4. System: Android system version 4.4 or above, iOS system version 9.0 or above 5. Battery life: Use for 20-30 days and standby for 45-60 days 6. APP: QWatch Pro 7. APP supports languages: English, Simplified Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, Traditional Chinese, Ukrainian, Italian, Portuguese, Dutch, Polish, Swedish, Finnish, Danish, Norwegian, Hungarian, Czech, Bulgarian, Romanian, Slovak, Latvian, Indonesian, Thai, Turkish, Vietnamese, Hindi, Pashto, Lithuanian, Estonian, Slovenian, Croatian, Greek, Filipino, Hebrew, Malay, Serbian, Persian. 8. Waterpfoof Level:1ATM Waterproof Functions: 1. Incoming call reminder,find the bracele,clock,shutter 2. Do not disturb,blood oxygen monitoring,blood pressure monitoring 3. Heart rate monitoring,sleeping,sedentary reminder,code scanning,reset