Easy to use: High durability casing with clip, more convenient for you to carry. A variety of color and storage capacity for you to choose, to show everyone your personality! Unique waterproof design, IPX8 waterproof level, even you are swimming and do not need to worry to listen to music! The MP3 player is easily recharged by a USB cable, and plug it into a USB port like the one found on your Mac or PC. Built-in rechargeable lithium battery,you only need to charge MP3 for 2 hours and you can use it for 6-8 hours underwater of 3 meters. Waterproof rating: IPX8. Maximum underwater depth: 10M/32.8ft. Media supported files: MP3/WMA/WAV. FM: 87MHz~108MHz. Power supply: Built-in lithium battery. Charge time: Approx. 2 hours. Playing time: Approx. 6--8 hours. Colour:A: black(4GB)/B:black (8GB)/C: blue(4GB)/D: blue (8GB) Material:plastic<br><br>Package Contents: 1 x MP3 Player Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.