– LFC Bluetooth Headphones sleek black design with silver LFC crests– extendable head band buttons on the side of the headphones for easy portable use– comes with double AUX cord and Micro USB cord for charging– mirco SD card slot XB450BT wireless bluetooth version: V5.0– EDR operation distance: 10M PC interface: USB2.0– battery: 5V / 500mAh operating frequency: 2KHZ-20KHZ– in a display box– official licensed product