Q:If can’t track heart rate.
A:Please switch the interface to “DFit ” and long press the button till 4 times vibrations happen.The most of working problem will be solved.
Q:won’t turn on
A::If the device state low battery power will affect the regular using, Pleae try to take charge before using it.

Product Features

• Connect to your phone with bluetooth4.0, compatible with Android 4.3 or higher, IOS 7.0 or higher.
• Sensitive touch screen shows time, heart rate, walking steps and distance, calories burnt, battery capacity. There are daily, weekly, monthly and annual summary of your activity, all these show on the APPs, tracks your activity apparently.
• Notifications push from APPs on your phone synchronously, such like phone calls, emails, SMSs, whatsapps, twitter fackbook etc. Show contact names or message overviews. Never miss a message or call when your phone in pocket or on the desk. Heart rate monitor, advanced green light sensor detects your heart rate when you are doing exercise, jogging, yoga. Help you know your own fat-burning heart rate. Lose your weigh scientifically. More functions: Sedentary reminder, sleep monitor, alarm clock.
• Heart rate monitor, advanced green light sensor detects your heart rate when you are doing exercise, jogging, yoga. Help you know your own fat-burning heart rate. Lose your weigh scientifically. More functions: Sedentary reminder, sleep monitor, alarm clock.
• What You Get: Longess fitness tracker x1, cable with clamp x1, English manual x1, Longess welcome guide x1, Longess fan-favorite 18-month warranty and convenient customer service.