... ,Digital FM Tuner,lyrics LCD display function3.With good Li-ion battery,easy to carry4.Applicable for PC,DVD,Mp3,iPod,PSP ... : 90Hz-20KHz6Sensitivity: 80db±2db7Distortion: ≤0.3% 8Battery: rechargeable and replaceable lithium battery9Input Power : USB power 3.7V and lithium battery10Applicable for : PC,DVD,PSP,cell ...