Andoer Digital 4GB Clip-on Waterproof IPX8 Mp3 Player FM Radio Swimming Diving Sports Stereo Sound with Earphone Waterproof stereo sound MP3 player is specially designed for swimming, surfing and other water sports. Compliant with international IPX8 waterproof standard. 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 greatly insulate 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. With FM radio function.