Supershop New Cool 4GB Wareproof IPX8 Sport Waterproof Mp3 Player for Swimming/ Running Underwater Jogging/ SPA+ Waterproof Earhook Headset+ Earphone- Black International standrand waterproof IPX8. Supported MP3/WMA file playback. 108 MH FM radio 87MHz. built in 3.7V battery,130MA,support for fast charging function, continue for 7 or 8 hours. The 7 memory to support 1G-16G.