With this KB-76 high performance Bluetooth speaker, you can enjoy music as you like; It supports an external TF card and can directly play music from the TF card. The compact size makes it convenient to carry anywhere; Designed with a DC /TF card slot. Built-in rechargeable 180mAh lithium battery; Can work for 1~2 hours. Supports MP3 music format; Lightweight for easy carrying; You may use this speaker without bluetooth simply use the stereo speaker cable supplied.