AK81 BT Call Smart Watch, Support Blood Pressure Heart Rate Sports Health Monitoring Fitness Tracker Hardware Parameters: 1. Main chip: Realtek 8763EWE 2. Memory: 16MB FLASH + 160KB RAM, external expansion 128MB FLASH 3. Screen: 1.46 inch IPS Colorful LCD; Resolution: 360 x 360 4. Touch: Full touch 5. Bluetooth-compatible: V 5.0 6. Heart Rate Sensor:Wiki Heart Rate Sensor VC30F S; G-Sensor: ST+ Wiki Go more algorithm 7. Battery: 400mAh polymer 8. Waterproof: IP68 9. Smart Bracelet Material: Main metal, TPU watchband 10. Size: 47 x 54 x 13.2mm 11. Weight: 55g System Parameters: 1. Android System: Support Android 4.4 and above 2. iOS System: Support iOS 9.0 and above 3. Function: Notification (Withcontent for Facebook, twitter, What app, Wechat, Line Kakao Talk lnstagram), encoder, pedometer, music player, BT call, call records, contact person, phone dialing, sedentary reminder(APP), sleep monitor, remote camera, weather forecast, heart rate, blood pressure 4. APP Support Language: Support 13 languages (Chinese, Traditional Chinese, English, Korean, Japanese, German, Russian, Spanish, Italian, French, Polish, Arabic, Portuguese) 5. Watch Language: English, Simplified Chinese, Japanese, Kor., German, French, Spanish, Arabic, Russian, Traditional Chinese, Italian, Portuguese, Polish, Czech, Vietnamese 6. APP Name: DAfit Packing List: 1. Watch x 1 2. Charge Cable x 1 3. Manual x 1