... and PowerBuilt in rechargeable 300-450mah lithium-ion battery,Earphone play standby 12-22 hours, Charging via power ... ,Equalizer Choices:Normal/Rock/Pop/Jazz/Classic/DBB,Earphone jack3.5mm,AccessibilityFrequency Response20Hz-20KHz,Sample Rate8 KHz, ... -book , Telephone book, Heavy bass speakerIn the BoxColorful box, Player,Stereo earphone, USB cable, Charger, User Manual ( function(){ var aBigImageSrc = ...