for now watch can use for two app, first is qifitpro, second is lewear, please check which can be use.HELLO WATCH 3 PLUS Smart Watch 2.04 Inch AMOLED Screen 49mm Bluetooth Call Photo Album Local Music EBook Smartwatch 4G RomSelling PointsAmoled ips/ROM 4Gb/compass/Sincerity rate/blood oxygen/ NFC/Built in music/sound recording/E-book/album/navigationMajor functionDial download,Bluetooth call,Notify,Heart rate, blood pressure, blood oxygen,Step counting,Multiple ,offline payment,Built in musicNFCFunctionPlatformA16 ; RAM:128Mb; ROM:128Mb+4GbQuality StandardGB4943.1-2011;GB/T22450.1-2008Size Surface diameter49mm:49×43×14mmmachine weightSingle head 52.8gwatch caseZinc alloy caseStrapStandard sport watch band49MMChargerWireless chargerGreen ProductCE certified/RoHS CertificateColorTitanium GoldDisplay2.04 inch HD Amoled Displayer 368*448 Pixels.Touch panelMultiple touchBluetooth pushCalls, Email, SMS, WhatsApp, WeChat etcHeart RateAuto 24H monitorPedometerDaily steps counting, calorie burn morningSleep MonitorObjective and scientific quantification to record and analyze your sleep conditions, every night from 9 a.m. to the next day automatically turned onBluetooth pushBT 3.0+5.0.Battery450mAh Lithium ion polymer battery, 180mins to full chargeVibration motorVibration FeedbackIntelligent knobsupportHeart rate monitoringsupportBlood oxygen saturationsupportNFCsupportFull screen lyricssupportcompasssupportAlipay offline paymentsupportalbumsupportElectronic novelsupportSmart Watch Support Language:Chinese/English/Traditional/French/German/Italian/spanish language/Portuguese/Russian/Turkish/Japanese/Vietnamese/Ukrainian/farsi