Portable Bluetooth Speaker with LED Colorful Stage Lights! Rechargeable battery 800mAh. With a plastic handle .USB port/AUX Input/Micro-SD card slot/FM radio Function. Output power 5W. Comes with a strap to carry it comfortably. TWS (True Wireless Stereo). Allows you to connect two AK337 for stereo sound experience. Available in different colors: black/blue/red/gray/camouflage. The cylinder form of the subwoofer provides an amazing sound, you will get surprised of the good quality of audio that comes out from this little speaker!!