Product Name: Stainless Steel Waterproof Wearable Device Fitness Tracker Smart Watch Model NO.: ASHA68 Feature: WiFi, Bluetooth, Water Resistant Material: Stainless Steel Usage: Detection, Communication Display: OLED Trademark: OEM Transport Package: Retail Package Origin: China Product Description Functions:With 0.66 inch OLED screenHeart rate detection/Blood oxygen detection / Blood pressure detection/Fatigue detection.Sleep detection (Sleep time ,Sleep quality)Calls to remind,SMS Reminder,Third-party messaging reminder :Wechat/QQ.Standard exercises functions (Pedometer,Calorie Consumption,Distance Calculation)Anti-lost function (Overtop the working connection distance between the mibile phone and bracelet will give the reminder),Clock alarm.Task Reminder (Sedentary reminder /Drink water reminder),Remote camera,Synchronous data to APK/APPTime ,Pedometer,Calorie Consumption,Distance Calculation,Sleep time ,Camera,On/Off dispaly.Specifications:System Requirements: :Android system 4.4 version or above ;iOS system 8.0 version or above ;Support bluetooth with 4.0 version;Battery : 80mAhRam :64K(Flash 512K)Packing box size(mm):75 X 95 X 77.5mmSensor :G-sensorChip: NRF52832Working time :7daysWaterproof level :IP67Bluetooth version:Blue 4.0Screen:0.66 inch OLEDStand-by time :about 20days