Product Features:1.Power switch/record switch.2."+" volume plus/key for next song.3."_"volume minus/mp3 music conversion key4.Headphone jack5.Work indicating lamp6.Size:47*19*7mm7.Recorded file in :wma/mp3 format8:High capacity9.Built-in rechargeable lithium battery10.USB storage write protection11.one-touch recording & high quality recording12.Recording via high grade built-in microphone13.Recording te;ephone conversation14.Working as drive free usb flash disk15.MP3 functionFuncion Parameters:1.Battery capacity:lasting for about 3-5h while continuously recording2.Lasting for about 8h while continiously playing3.Recording format:WAV4.Music format:MP3/WMA/WAV5.Lasting for about 48h for 4GB while continuously recording6.Sampling frequency:48KHZ7.Bits:192KBPS9.Remarks:Due tothe recording effect of this products ,relatively clear quality and high parameters having reached the top parameters,the recording file is relatively big,thus,please extract and save the recording file timely10.Waring tips:for this machine comes with the intelligent reset system,please save the file being recorded before connecting the computer.Package includes:1x 8GB voice recorder & MP3 PLayer (Earphone not included)1x connect cable1x user manualNote:We don't offer retail package,but we will pack it well before shipped out.