... battery 4.Fast delivery time Perfect for Dancing Speaker with USB/Micro SD/FM (V309) Function and characteristics:1.MiniSpeaker ... ,Digital FM Tuner function3.With good Li-ion battery,easy to carry4.Applicable for PC,DVD,Mp3,iPod,PSP,cell phone ... ±2db7Distortion: ≤0.3% 8Battery: rechargeable and replaceable lithium battery9Input Power : USB power 5V and lithium battery10Applicable for : PC,DVD,PSP,cell ...