A8 1.98 inch 2 in 1 Bluetooth Earphone Steel Strap Smart Watch, Support ECG NFC 1. Hardware configuration: CPU: Realtek8762DV RAM (Random Access Memory): BK3266 ROM (Read Only Memory): 128KB Heart rate sensor: 3301 Accelerometer: SC7A20 Bluetooth: 5.0 Display: 1.5-inch 172x320 IPS display Vibration motor: 15000+2500rpm Touch: full screen Battery: 160mAh Charging interface: 2 Pin magnetic interface Handset: 1207 waterproof handset MIC: 0415 waterproof MIC 2. Basic functions: support device information, brightness adjustment, NFC electronic tag, flashlight, raise wrist to light up the screen, find phone, restore factory settings, do not disturb mode, display time 3. Call: Support Bluetooth calls, with dial pad to make calls Voice assistant: support, long press the button to enter Watch phone book: can synchronize 100 contacts to the watch Call history: support 10 call history 4. Health management: Exercise monitoring: record daily steps, exercise distance, calories burned Sleep monitoring: automatically monitor sleep, wake-up time and sleep quality Heart rate detection: support Blood pressure and blood oxygen detection: support Breathing exercise: support Exercise mode: support 98 exercise modes ECG detection: support 5. Reminder settings: alarm, sedentary reminder, target reminder 6. Information push: Incoming call: support call rejection, automatic answering by taking out the earphones SMS: watch displays mobile phone push SMS and application messages Social: QQEmailfacebooktwitterwhatsapplineskypeWeChat, etc. 7. Application functions: support instant change, remote photography, physiological period, password lock, bedside clock, screen-off dial, location, weather, social sharing, firmware upgrade 8. Language: Watch firmware: Simplified Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish, Greek, Vietnamese, Thai, Arabic, Polish, Dutch, Latin, Danish, Romanian APP: