... , the bass more pure and stronger 5) Embedded type lithium battery, can use USB or power adapter for charge, more convenient ... (Ω)Li-ion Input:3.7V~4.2V+0.05V Lithium battery capacity:600mAhSpeaker Unit:45mmCase Material:aluminium alloyDimensions: 17 X 5 ... to computer, Notebook, mobile phone, MP3/MP4, etc..6) External rechargeable Li-ion battery 600MAH7) Can connect to Hi-Fi Speaker Our advantageFast ...