Powerful & Crystal Sound: Completes your home theatre system with full range high quality 5W*2 speakers.Enjoy room-filling, crystal clear rich stereo sound at home SLIM DESIGN: Can be carried freely, wherever in backyard, outdoor activity, bedroom,car, garage and so on. Just enjoy the fantastic immersive stereo sound. With built-in microphone, you can even use this speaker for answering calls Easy operation: Come with remote controller: Directly adjust volume/ pausing/playing, skipping songs. On right side of sound Bar,There is Illuminated volume control button to adjust volume as well.Easy and convenient for you to use both in Bluetooth connection or wired connection. Long Playtime With Built in Battery: 1800m Ah,It can be played continuously for 4-6 hours after being fully charged.USB Cable is for power only.It can be charged with power bank as well.