This music tesla has the functions of wireless power transmission and speaker, which can ignite gas pipes and bubbles. It is a perfect teaching tool to stimulate students' interest in science and a great gift. Therefore, Tesla coil has become a multi-functional artwork with high playability, good viewing and practical science education. Long arc mode and music mode: Long arc mode releases Fast Charging at a fixed frequency. Turn the knob to medium power, you can touch the Fast Charging with your hand, you will feel a little stinging, and it will be particularly powerful in front of your friends. Music mode, connected to the device through Bluetooth, playing square wave music, and Fast Charging energy is concentrated in the cluster. It is small enough, adopts more complicated circuit design and upgrades a larger top booster coil area, but it has shocking energy. Turn the sound slowly to avoid the big impact of the arc sound. The optimized Tesla coil Fast Charging arc is long and thick. Upgrade: Bluetooth connection is more stable! The self-developed Bluetooth chip can adapt to all mobile phones, computers and other Bluetooth devices. Better coil technology! It is covered with gold-plated and transparent ink, which has better dustproof ability and higher stability. The operation is convenient and simple. Just tighten the discharge needle, turn off the power supply and frequency, and plug in the power supply. You can see the Fast Charging in front of you, switch to the music equipment, use 122 square wave music USB memory sticks, and support Type-C. You don't need to download it to your mobile phone, just insert a USB memory stick. Let Fast Charging follow the rhythm of music. Colour:Gold & Black Material:Acrylic Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. voltage:AC110V Package Contents: 1 * Tesla coil speaker 1 * power adapter 1 * discharge needle 2 * atmosphere lamp Only the above package