Bakeey A4 4G 1.39' AMOLED GPS+BDS WIFI IP67 Customized Watch Face Android 7.1 APP Market Smart Watch

General Specification Brand Bakeey Model A4 Bluetooth Version BT 4.0 or above Operating System Android 7.1 Compatible OS Android 4.4 or above , iOS 9.0 or above Operating Mode Touch Screen Camera 2.0MP Watch Language English APP Name Wiiwatch2 Watch Language English, French, German, Italian, Spanish, Portuguese, Russian, Traditional Chinese, Simplified ChineseTechnical Parameters Hardware CPU: MT6739 RAM: 1GB ROM:16GB Network Network type: GSM+WCDMA+FDD-LTE+TD-LTE Frequency: 2G GSM:850/900/1800/1900 3G WCDMA:850 /1900/ 2100 4G LTE-FDD:B1/B2/B3/B5/B7/B8/B12/B17/B20 LTE-TDD:B38/B39/B40/B41 WiFi: Support SIM Card: Nano SIM Position System: Support GPS/BDS Display Size: 1.39inch Type: AMOLED Resolution: 400*400pixels Material: Corning Gorilla Class 4 Sensor G-sensor, Heart Rate Sensor Battery Battery Capacity: 530mAh Standby Time: About 3 days Using time: About 1 day Charging Time: About 2.5 hours Charging Type: Magnetic chargingSpecial Features Bluetooth Calling Support Heart Rate Monitor Support Sleep Monitor Support Pedometer Support Waterproof IP67 Call or Message Reminder Support Other functions Support Remote Camera,Music Player,Weather Forecast,Alarm,Calender,Sedentary reminder,Camera remote,control,Anti-lost,calculator Alert Type Vibration Auto Light-up Screen Support Stopwatch SupportAppearance & Details Strap Material: Silicone Length: about 206 mm Width: about 24 mm Weight Product weight: 78g Dial Diameter: 48mm Dial Thickness: 16.5mm 1*Bakeey A4 4G Smart Watch 1*Charging Cable 1*User Manual (English Version)Q&A1.Q. Is it waterproof ?A. Not waterproof. 2.Q. What is the APP?A. It’s Wiiwatch2.