TOOGOO(R) 4GB IPX6 Sport Waterproof MP3 Player FM Radio for Swimming/ Running Underwater Jogging/ SPA+ Waterproof Earhook Headset Earphone Waterproof stereo sound MP3 player designed for swimming, surfing and other water sports. With FM radio function. High durability aluminum shell with clip, more convenient for you to carry. Along with waterproof earphone and four soft silicone ear cushions. Built-in rechargeable li-battery, it can work for 8 hours when fully charged.