Power: 15 W; Power input: DC 15 to 24V, Current 2A, DC5.5 interface Audio input: 3.5 socket, can be connected with the mobile phone, MP3, computer audio. Plasma speaker stereo speakers: the principle is to stimulate the plasma arc of air turned into air vibrations generated by the expression of a new concept, you can access your phone, mp3, computer audio input this mini speaker plasma arc speaker compared to the actual real experience better sound high-frequency response, and spark plasma arc speakers have good sound quality, stable and safe, you can play any song without , easy to Use resources compared; There is as a new member stereo home player! Principle of wireless transmission: a coil connected at both ends with both ends LED, near-emitter device, Qiliang LED, the principle is resonant wireless power transfer. on the basis of the general increase of the music player, you can play phone / computer music, a clear sound. 15-24 V DC input voltage when 24 V, 5-10mm arc length meters is Perfect, small size, power range and power, can be a long working uninterrupted, you can also take LED lit, foam Energy-saving , frequency flash tube, you can play power transmission wireless, arc and so on. Precautions: 1, product safety, power is not high, not because of an electric shock, but is not recommended to touch the top of the arc coil, there will be a burning sensation. 2, after a long time the power does not touch the heat sink, the temperature is very high, especially when using a huge 24V high-voltage heat, reserve a fan interface, plus cooling fan if necessary. 3, not for the phone, mp3 and other electronic equipment near the coil, the coil generates a high frequency magnetic field would interfere with these mobile phones, mp3 and other equipment failure or damage! Different batches, the color andappearance of some accessories may be different, which does not affect size:71x38x76mm Material:PCB+Metal+Electronic accessories colour:black Package Contents: 1 set * DIY Mini speaker Music Coil kit (DIY parts; radiator and audio cable colors are random, do not accept designation) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.