VS PICK| TECH | Wireless Bluetooth Headset Stereo Handfree Sports Bluetooth Earphone With Charging Box For Iphone Android PK X2T i7/i7s
Step 1: Take out two earphones, press both switch for 6 seconds to let go, until the two headphone indicator light flash red and blue,wait for 3 seconds,
Step 2: Double click any one of earphones switch (the main headsets) then two headphones in series with each other, at this point, master headphone shows flashing blue and red, vice headphones
Step 3: shows slow flash blue, then you can pair them to your phone. THen 1-2minutes later both earphones shows a blue light, (when it is not paired successfully, one earphone flash blue light with sound.)
Step 4: Another flash red and blue light alternately without sound.