A7 TWS Wireless Bluetooth Headset Stereo Handfree Sports Bluetooth Earphone With Charging Box For iphone Android PK X2T i7/i7snote: there is a film to protect the case from scrach during the transportion! it is not scratch!!! the 1 step: take out two earphone ,press both switch for 6 seconds to let go ,until the two headphone indicator light flash red and blue,wait for 3 seconds, double click any one of earphones switch(the main headsets) then two headphone in series with each other,at this point,master headphone showes flashing blue and red,vice headphones shows slow flash

note:there is a film to protect the case from scrach during the transportion! it is not scratch!!!

• the 1 step:take out two earphone ,press both switch for 6 seconds to let go ,until the two headphone indicator light flash red and blue,wait for 3 seconds,

• double click any one of earphones switch(the main headsets) then two headphone in series with each other,at this point,master headphone showes flashing blue and red,vice headphones

• shows slow flash blue,then u can pair them to your phone.then 1-2minutes later,both earphone shows slow blue,
  (when it is not paired successfully ,one earphone flash blue light with sound ,

• another flash red and blue light alternately without sound( as the video updated showes!)

• can u go to our product page to see the video updated,

• it is shows how to pairring it successfully .to see whether the earphone piar successfully or not

• it is mostly depends on earphone indicator light

• when your think the earphone is bad ,pls send me a pairring video

•  Which can show the earphone indicator light and swich is flash correctly
    

• (warranty only work without negative stars)

• pls notice on the cell phone call mode only maintain earphone will have sound

• when u are playing music both earphone work with sound