Features:Waterproof stereo sound MP3 player is specially designed for swimming, surfing and other water sports.Compliant with international IPX8 waterproof standard.With FM radio function.Highly durable aluminum shell with clip, more convenient for you to carry.Along with a waterproof earphone and four soft silicone ear cushions. The included two pairs of silicone ear cushions with different size for different people and can greatlyinsulate the sounds around you, so you can hear your call clearly.Built-in rechargeable lithium battery can offer you 8 hours of music playing time After fully charged.Specifications:Color: Black,Waterproof rating: IPX8Maximum underwater depth: 10m / 32.8ftStorage: 4GBMedia supported files: MP3/WMAFM: 87MHz~108MHzPower supply: Built-in lithium batteryCharge time: Approx. 2 hoursPlaying time: Approx. 8 hoursMain item size: 6.5 * 2.8 * 2cm / 2.6 * 1.1 * 0.8inMain item weight: 19g / 0.7ozPackage size: 12.7 * 11.5 * 4cm / 5 * 4.5 * 6.5inPackage weight: 92g / 3.2ozPackage List: 1 X MP3 Player1 X Waterproof Earphones4 X Ear Cushions1 X USB Cable1 X Cleaning Cloth3 X User Manual (English)