Specifications:Compatible with most 3.5mm stereo jack devices ( such as iPhone， Samsung， Nokia， HTC etc)， but small partial cant not work， please kindly note about it.Build-in microphone for hands-free calls/voice chatHigh fidelity stereo speakersLighting intelligent controlStandard 3.5mm stereo Audio connetor How to use it:EL Light on button ( press the button for 3 seconds until light continue 2sec )EL Light off button ( at the on mode， press it for 3 seconds until EL light flashes 3 times )Calls answer / Music play button ( press it one time to answer alls / pause music)No music playing / calling over 180 sec EL light will turn off automaticallyEL light flows with the music beat / cellphone ringPackage includes:1x Glowing Earphone1x USB Charge CableWarm tips:Please charge first before using this productCan't adjust the volume on the mic sectionThe mic section is a little big (2.5 x 0.6 x 0.5 inch) with built-in battery and usb portThe earphone is very bright when the volume of the music is high. The light is weak when the volume of the music is lowYou can use it normally without charging. It only requires charging to use the light featurePlease avoid listening the music loudly for a long time to protect your earsNote: There may be a bit color difference due to different display brightness or a bit dimension difference due to manual measuring， thanks for your understanding!