Feature: 1. PRODUCT INTRODUCTION: This music coil has wireless transmission and speaker functions, which can light gas tubes and various bubbles. 2. WIDE APPLICATION: The coil can be used to carry out wireless power transmission, wireless lighting, insulator withstand voltage test and other scientific experiments. The teacher uses the coil to demonstrate the principle of boosting and high frequency peeling to students, effect, etc. 3. BETTER PLAY EFFECT: This music coil has circuit protection design, which will not damage the input device. The quality of playing music is better than that of ordinary arc plasma speakers. 4. FAST CONNECTION: BT connection, convenient and fast. The newly designed PCB is adopted, and the circuit design is reasonable. 5. LONG LIFE SPAN: Increase to 3 capacitors; The circuit assembly structure is optimized; The slow start circuit can be quickly plugged and unplugged without damage and has a longer service life. 6. FAST HEAT DISSIPATION: The coil possesses fast heat dissipation that maximum power supports continuous operation for one hour, comprehensive protection and durability. Specification: Item Type: BT Music Coil Material: Acrylic, PCB, Aluminum Alloy Basic Parameters: Power: 0 to 120W Lightning Length: Approx. 0 to 10cm / 0 to 3.9in(adjustable knob). Package List: 1 x Coil 1 x Adapter 6 x Ambient Light 1 x Discharge Needle1 x Manual 1 x Accessory