Avantree Audition, the latest Bluetooth 4.0 stereo headphones with microphone from Avantree family. It features with over the ear design which will be much more comfortable . With NFC function, you can touch your phone to it and the headphones will turn on, connect or disconnect. They are light weight and stylish. The buttons on the ear cup allow you to play and pause your music streaming, receive calls, adjust the volume etc. It can connect two devices and the battery lasts forever (up to 40hrs)! Even if the battery is low, you can plug them in with the audio cable and use like wired headphones!