A special and mesmerizing way to experience audio. This beautifully crafted musicbox uses the power of a Tesla coil to creates stunning visual and auditory effects. Simply connect your mobilephone BT and watch as the electric arc dance to the songs. Features: The Tesla Coil Music Box produces touchable electric arcs and Features both AUX and BT modes. With adjustable arc length and frequency, the electric arcs dance to songs. The Tesla Coil Music Box can wirelessly light up various gaslamps and even ignite FlammableMaterials with high-frequency electric arc release. This special and innovative product is perfect for musiclovers and science enthusiasts alike. Compact size for convenient operation and carrying. It is a perfect teaching tool to spark students' interest of science, also can be a fine gift for teenages. Specifications: Plug: EU-plug, US-plug (optional) Frequency: 5-50Hz Input volatge: 48V Material: acrylic Arc: 0-80mm / 0-3.1in Item size: 90 * 90 * 33mm / 3.5 * 3.5 * 1.3in Item weight: 222g / 7.8ounce Package size: 154 * 90 * 80mm / 6.1 * 3.5 * 3.1in Package weight: 409g / 0.9lb Packing List: 1 * MusicBox 1 * Power Cable 1 * Electric Conduction Needle 2 * Bulbs