NFC access control function. You need the NFC chip of your mobile phone to use the access control function of the bracelet.Reminder of NFC function:1. The NFC in this table only supports the frequency of 13.56MNZ (applicable to 80% of the products on the market) as an IC door card, and does not support other functions.2. Mobile phones that support NFC function can directly read the unencrypted door card and write it into the watch.3. Fingerprint lock enters administrator mode - add - write card.4. The encrypted access control of the community needs to be written in the property management office of the community.Special functions:You can upload pictures to customize wallpaperPhonebookMake a callHeart rate monitoringBlood pressure monitorpulse oximeterSleep monitorMultiple sports modesPedometerCall or message remindercaller ID displayInformation push reminder (SMS/QQ/WeChat/Skype/Facebook/Twitter/Line/ChatsApp)Weather pushMusic controlAutomatically light up the screenReminder type: vibrationStopwatchOther functions: alarm clock, sedentary reminder, camera remote control, anti-loss.APP name: HryFineFunction introduction:CPU: ZK8918CBT - Version: BT 5.0Memory size: 32MBCompatible operating systems: Android 5.0 or above, iOS 9.0 or aboveOperating mode: full touchWaterproof: IP65Screen size: 1.28-inch TFTResolution: 240 * 240 pixelsBattery capacity: 150 mAhStandby time: about 25 daysUse time: about 3-5 daysCharging time: about 2.5 hoursPower supply: 5V/1ACharging type: wireless chargingProgram languages: English, Simplified Chinese, French, Spanish, Polish, Portuguese, Italian, German, Dutch, Turkish, Russian, Czech, Persian, Hungarian, Greek, Arabic, Filipino, Malay, Indonesian, Vietnamese Swahili, Finnish, Ukrainian.Interface language: English (default) French Arabic German Indonesian Italian Malaysian Persian Spanish Russian Vietnamese Czech Turkish Polish Greek Hebrew Filipino Thai Chinese Dutch Finnish Swedish HungarianMessage push support languages: most languagesPackage includes:1 * Smart watch1 * Charging cable1 * User manual1 * Retail boxPlease keep the APP running in the background of the mobile phone, or the watch will be disconnected from the mobile phone and unable to receive information.