... speaker Take your music everywhere you want to be Rechargeable lithium-ion battery Great for work, school, beach, travel and more ... 3.5 audio inputCompatible with any device that plays musicRechargeable Lithium batteryExcellent sound quality & powerful bassGreat for work, school, ... 3W 8) Power supply: USB charge or Build-in Lithium battery 9) Lithium battery capacity: 500mAh 3.V10) Playback time: 3-5 ...