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 wallpaper Phonebook Make a call Heart rate monitoring Blood pressure monitor pulse oximeter Sleep monitor Multiple sports modes Pedometer Call or message reminder caller ID display Information push reminder (SMS/QQ/WeChat/Skype/Facebook/Twitter/Line/ChatsApp) Weather push Music control Automatically light up the screen Reminder type: vibration Stopwatch Other functions: alarm clock, sedentary reminder, camera remote control, anti-loss. APP name: HryFine Function introduction: CPU: ZK8918C BT - Version: BT 5.0 Memory size: 32MB Compatible operating systems: Android 5.0 or above, iOS 9.0 or above Operating mode: full touch Waterproof: IP65 Screen size: 1.28-inch TFT Resolution: 240 * 240 pixels Battery capacity: 150 mAh Standby time: about 25 days Use time: about 3-5 days Charging time: about 2.5 hours Power supply: 5V/1A Charging type: wireless charging Program 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 Hungarian Message push support languages: most languages Package includes: 1 * Smart watch 1 * Charging cable 1 * User manual 1 * Retail box Please 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.