BigBen L18 5 in 1 Smart Wristband with Heart Rate Monitor Sleep Sports Blood Pressure Tracker Sport Wristband: Smart Health Fitness Tracker, detection of your physical parameters including breath rate, blood pressure, heart rate, fatigue state, mood. Function: By calculating steps and distance, monitoring the number of calories, real time control of the heart movement exercise goals. Storage: Large memory space and battery capacity empower the bracelet reliability of data recording and storage. Suitable to all occasions and No GPS function. Install APP: scanning the bottom of the packing case of the QR code install IOS & Android APP(IOS-APP:Enterprise edition,need to set up trust 37 degrees APP in apple mobile phones and to open the APP properly). ATTENTION: When Bluetooth connecting, the bracelet must be in charging state , and mobile phone APP binding,Bracelet body on the charging seat, a green light flashing, activate the bluetooth, Open the APP, mobile phone near the bracelet, automatic search binding mobile phone APP.