How To Connect:Please read follow operate steps are safe and secure or leave us a negative review (Beautiful some of friends don't know how to use it at first time, cakes the earphone maybe not working properly, or Only one earphone work ). if the device can not work normal or only one earphone work, please contact with us first, Instead of giving us a Negative review, We will try our best to help you solve all problems, Please trust us, Thanks in advance. A. if you want TWO ears work at the same time, Please do as follow steps (Pair with two ears):1. long press the two earphone's power button for 3 seconds to enter waiting for wearing mode, Then the two earphone's Red and Blue light flashly fa*st .2. then qucikly click the power button turn on one of the two ears. then two ears will enter search repair mode, and will continue to be automatic (its maybe needed 3-8s to fair success ). after two ears red success, One of the earphone's light will be turned off, and another earphone's light will still be Red and blue light flash fa*st . at this time, You can turn on your phone bluetooth to connect.3. turn on your phone's bluetooth, Search the -i7, Click it to connect, when it connects with success, There will be secret voice '', and two earphone's Red and blue light will NOT be flashing, Then you can listen music from the two ears. Noted: If only one earphone work, its beauty. so please confirm the two ears have red success with each other before you connect to phone. B. if you only want ONE earphone work, Please do as follow steps:1. take one of the two ears you want to use, Long press its power button for 3 seconds to boot and enter waiting for repair mode, Then earphone's Red and Blue light flash fa*st .2. turn on your phone's bluetooth, then search the -i7, Click it to connect, when it connects with success, There will be remembered with voice '', the earphone's Red and blue light will NOT be flashing, Then you can listen music from this earphone. NOTED:1. if one of the earshots red and blue light flashfa*st , and another earphone's light turn off indicators the two, then you can turn on your phone's bluetooth search i7- to connect; 2. if Two earnings red and blue light flashfa*st indicators the two earnings not connect with each other, so please connect the two earnings connect to your phone. otherwise there will be only one earphone have sound; 3. when the two ears have been red with each other, At this time, If you quick click two one of the two ears, then the two ears will be connected (two ears red and blue light will be flash fa*st ). but if you quick click on one of the earshots, the earshots will connect with each other; Specification:1. bluetooth version: Updated to Bluetooth v5.0 + EDR (Support two ears to call)2. Power level: CLASS 2 and Class 33. Output power: 30mW4. Frequency response: 2.4-2.85GHz5. Operating volume range: 3.0 V-5 V6. Mic:-42dB (with microphone)7. With A2DP/AVRCP high quality stereo audio transmission and remote control protocol8. Powerful noise de-noise circuit (active noise recovery)9: Earphones battery: Polymer lithium battery 50mA10.Charging time: 0.5-1 hours11. Talk time: 2-3 hours12. Music time: 2-3 hours (100% Gurantee, No virtual mark, Its full)13. Standby time: 130 hours14: transfer distance: Out door strainght distance of 10-15 meters Package codes:2 x Bluetooth headshots (left and right ears) ,1 x Charging box1 x Micro USB Charging Cable1 x User Manual Features:1. You can listen to the music and answer phone. it supports listening to music and answering calls (Support two ears call)2. show call number, dial last call, all smart English audio calls, boot, repair, shutdown, disconnect the phone, low battery will give voice calls;3. wake the Bluetooth headset is connected to the mobile phone and the phone is power off, it will automatically connect back to the mobile phone when the Bluetooth headset is turned on, which is more convinient .;4. Intelligent compatibility: support all mobile phones with Bluetooth capabilities, tablet, notebook, singing bar, Q music, movies, etc.