Open the manual, There is a QR code on the manual, Scan QR code to download APP, Turn on the Bluetooth and GPS connection watchHello! Welcome to our store!Quality is the first with best service. customers all are our friends.Fashion design,100% Brand New,high quality!Color:As the picture show 1.Main Feature1.HD 0.96” color screen Message sync with cellphoneHeart rate monitor,blood pressure and blood oxygen monitor,sleep monitor. Environmental comfort TPE band Palming bright screen 2.Other Functions Step,Calories,Distance,Call reminder ,Alarm Reminder ,Social share(wechat,QQ,Facebook,Twitter)shake to remote camera 3.LanguageSync support language:Chinese/English APP language:Spain, French, Portugal, Netherlands, German, Russian, English, Chinese 4.Material Front shell: PC, rear shell: ABS+PC, Wrist band: environmental protection TPE Screen Size 0.96 Color screen 80*160Screen Type TFT Bluetooth 4.0BLE(Low power)Battery Type Polymeter Lithium Battery Battery Capcaity 105mAh Charging Type Special USB charging Charging Time 2 hoursEndurance Time ;Operation:5-10 daysMaterial Front shell: PC, rear shell: ABS+PC, Wrist band: environmental protection TPE Special Features Blood Pressure,Heart Rate, Compatible System Above Android 4.4/IOS 8.0Waterproof Level IP68Virbation Loundspeaker Mute/VibrationMaster Chip Telink8266Sensor RT3000PPG chip EM7028Manipulation Mode Single touch Packing Smart bracelet ,Instruction,giftbox 1 inch = 2.54 cmOur size is Asia size.There is 2-3% difference according to manual measurement.please check the measurement chart carefully before you buy the item.Item color displayed in photos may be showing slightly different on your monitor. Product Include 1*Smart Bracelet1*User manual No need for charging cable, USB direct chargingDear friends, our watches are undergoing strict quality checks before they are shipped. Make sure that each watch can successfully link to the phone Bluetooth, and the battery standby time is more than 48 hours, so you can buy with confidence.Of course, if you have any dissatisfaction after receiving the watch, please contact our customer service first, we will provide you with good service and solutions. Please do not open the dispute or give us negative feedback. Please believe that we will solve the problem for you. Thank you, best regards!