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of earphone90176。Previous Songs: press “PRE” key for 1 time。Volume : Hold the “PRE” key.Operating Instructions:(5 Keys MP3 Player with FM radio amp。Play/Pause: press “PLAY” key for 1 time。 reinforced Polaroid polarizing lens provides clear, natural sight, and excellent antiimpact performances. It shields UV, glare and diffused light, allowing you to enjoy music in the sunlight without disturbance, and protect your eyes and eyesight。User’s Manual Pop Sunglasses Digital mp3 playerAppearance amp。 WMA,WMV,ASF,WAV formats。 if Windows 98 user, please setup the USB mass Storage Device driver in the CD driver.● USB high speed port.“Encrypted Space” disk:You can divide the flash memory into two disks using the supplied tool software, and encrypt one disk to hide the important files, make the content saved in the encrypted disk can’t be read or written by any unauthorized people, safely hide you secrets.Operating Instructions: (3 keys Mp3 Player)Power On/Off: press and hold “PLAY” key for over 3 seconds。Volume +: Hold the “NEXT” key。Next songs: press “NEXT” key for 1