Specification:100% brand new and high qualityMaterial: Electrical componentsColor: As shown in picturesTesla 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 voltageWhen 24 V, 5-10mm arc length meters is ideal, small size, power range and power, can be a long working Energy-saving lamps, frequency flash tube, you can play power transmission wireless, rotary arc and so on.Parameters:Size: 38 * 79mmPower: 15 wPower Input: DC 15-24V, Current 2A, DC5.5 InterfaceAudio input: 3.5 jack, you can connect your phone, mp3, computer audioPlasma 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 Tesla 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 earthing, easy to Use resources compared; There is no doubt 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 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. It is not recommended to work on the body or other objects near the coil Tesla coil, the coil within half a meter next to other objects can not be left blank, because other objects such as a good conductor coil will form a good Loop, coil to absorb energy, then pull the coil or unable to Water demonstrate the effect of the demo variation! please, note;4. 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!Package Included:1X DIY15W Mini Speaker Music Tesla Coil Kits(NO Include Stainless Ball !!!)