Speaker, Applicable for ipod, MP4 Player, Laptop, PC and More.With special particular patent in worldwide. Be applicable for MP3, MP4, laptop, PC, MD ... weight: 112g Speaker: φ36mm Input: L/R 380mV Power output: 1.7W S/N: 80dB AMP frequency range: 280-16KHz Charge ... .5V Suitable temperature: 0 - 40 C Be applicable for MP3, MP4, laptop, PC, MD, mobile phone, and more With the intellectual ...