ENVEL Bluetooth Earbuds Runner Headset Sweatproof Earphone Bluetooth 4.0 Stereo Earbuds with Microphone for iPhone Android Smartphone (Gold) HD SOUND - High definition stereo music play noise isolating earbud bring you to a pure touching music world. MAGNETIC - Easily stow your Earbuds by wearing them around your neck. Instantly access your Earphones anytime without searching your pockets. Looks cool as well. HIGH COMPATIBILITY - Bluetooth 4.0, which compatible with IOS iPhone or Android smartphones with clear and mellow music play,Lis left and R is right. STRONG HAREWARE - CVC6.0 highest version of Bluetooth intelligent noise isolation technology,You can enjoy high-fidelity stereo music. EASY TO PAIR - First press Power Key(middle button) 4-8 seconds until the LED flashes red/blue to indicate pairing mode; second,activate the bluetooth feature on your device,then use phone menus to "add","search" or "scan" for new bluetooth device(if your device can't find this earbuds,you can turn off your device bluetooth,then turn on); then select this earbuds blueooth to connect.(the more detail check USER Manual)