Speaker, Applicable for ipod, MP4 Player, Laptop, PC and More.With special particular patent in worldwide. Be applicable for MP3, MP4, laptop, PC, MD, ... magnet inside the speaker case, that will combine the 2 speakers together, and easy to take Used new design of latent ... 280-16KHz Charge voltage: 5V +0.5V Suitable temperature: 0 - 40 C Be applicable for MP3, MP4, laptop, PC, MD, mobile phone, and ...