Fill your ears with harmony by filtering out everything around you. KDM wireless headphones are here to revolutionize audio entertainment with an outstanding sound quality and seamless bluetooth connection to bring you the real-life experience that goes for hours with a long battery life. Sound : Bluetooth stereo TF card play : Yes FM radio : Yes Audio input : Yes Power : Micro USB DC 5V Color : Available in 3 different colours Compatibility : Compatible with any music players using 3.5 mm standard , Compatible with all mobile phone , music players , Portable gaming devices and computers Instant music : Yes Application : Built in mic with answer / call end allows you to seamlessly switch between calls and music Bluetooth version : 4.2V Frequency response : 20 – 20000Hz Speaker sensibility : 108db+/-3db Colors : Black, Red