features: 1. This music has wireless transmission and loudspeaker functions, which can light up gas tubes and various bubbles. It is a perfect teaching tool to stimulate students' scientific interest, and also a good gift.2. This is an intelligent device for wireless transmission experiment. It can be used for manufacturing high-voltage , conducting various scientific experiments such as wireless transmission, wireless lighting, insulator withstand voltage test, etc. The teacher uses it to demonstrate the principle of boosting and high-frequency peeling to the students. Effect, etc3. This music has a circuit protection design, which will not damage the input device. The quality of playing music is ordinary arc plasma speakers.4. BT connection, convenient and fast.5. The newly designed PCB is adopted, and the circuit design is reasonable.Product parameters: voltage: 110-240VAC 50/60Hz: 0-120WFast Charging length: 0-10cm (adjustable knob)Host size: 106 x 106 x 58mmUpgrade point of gold plated version:1. Long arc+music Bluetooth mode2. Equipment volume increases by 40%, and the effect is more explosive With stronger heat dissipation performance, the maximum can support continuous operation for one hour, and it is fully protected and durable.3. No special supply is required. It supports 110-220V supply and can be directly used after being plugged inNote: The product comes with an American gauge plug. If you are an EU user, please prepare an American gauge to EU adapterPlug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on.Material: PCB+Metalcolour: BlackPackage Contents:1 x Host1 x Discharge pin1 x adapter(US Plug)2 x Small neon lampOnly the above package content, other products are not included.Note: Light reflection 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.