This product employs imported lenses, with trendy appearance; it supports MP1,2,3, WMV, WMA, ASF, WAV music formats; reinforced Polaroid polarizing lens provides clear, natural sight, and excellent anti-impact performances. It shields UV, glare and diffused light, allowing you to enjoy music in the sun without disturbance, and protect your eyes and eyesight; flexible earphone cord in best length, HIFI stereo earphones, up to 85 decibel volume, bring you endless joy of high-quality music; built-in lithium battery support maximum continuous 4-hour playback!