Aluminum housing High durability with Anti-scratch.Glasses elegant design with fluorescent support strap swimmer.USB rechargeable battery, can work 8 hours when fully .Compliant with USB 2.0 high speed specification.Compatible with Windows 98SE / ME / 2000 / XP / Vista, OS 8.6 and Linux 2.4.0 optional FM.Color: blackMaterial: PlasticMemory: 4GBMUSIC : MP3, wmabit rate: 32-320kbpsclassification temperature: 0-50 сигнал до шуму : & gt; 85dbheadphone output: 2 x 4 Mwbutton Controls: Forward, backward, play / pausePackage includes: V397B1 * MP3 player1 * Waterproof headphones1 * USB Cable1 * manualnote:light and different displays may cause the color of the item in the a little different from the real thing. Measurement allowed error is / - 1-3 см.