Dynamic Sound: This speaker is a 4" inch woofer speaker that provides listeners with optimal sound quality Convivence: With this AB-818 rechargeable speaker you'll be able to go anywhere, not worrying if there is an outlet near by. Just charge the speaker before hand and you'll have hours of fun! Charger included ! Maneuverability: Designed with YOU in mind. Carry handle for easy transport whether you are staying indoors for a lively night of karaoke or taking the fun outdoors. Poolside or beach This speaker is always on the go! Ready to celebrate a birthday, a reunion, wedding, or even small gatherings! Connectivity: Built in Bluetooth and TWS ( True Wireless Stereo ). It's effortless just connect your Bluetooth Enabled device and sit back and enjoy. With TWS you are able to connect TWO of the same speakers with one device for a more booming sound! Accessories: NO need to purchase anything! AB-818 includes USB DATA CABLE!