new and high quality. 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 lamps, frequency flash tube, you can play power transmission wireless, rotary arc and so on. 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 Parameters: Power: 15 w Power Input: DC 15-24V, Current 2A, DC5.5 Interface Audio input: 3.5 jack, you can connect your 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 Precautions: 1, product safety, power is not high, not because of an , 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. Colour:green Material:PCB+Metal+Electronic accessories Package Contents: 1 set x DIY Mini speaker Music Coil kit(DIY parts; the color of the radiator and audio cable is random, don't accept the specified color) Note: Different batches, some accessories may have different colors and appearances, which does not affect 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.