Feature: 1. [Adjustable Lightning Length] This coil desktop toy allows for adjustable lightning lengths ranging from 0 to 10cm. Plug in the power can light on the LED bulb. 2. [Circuit Safety Design] With a built in circuit safety design, this arc plasma coil desktop toy ensures the safety of your input devices, safeguarding against damage. 3. [Premium Music Playback] Experience premium square wave music playback that surpasses conventional arc plasma speakers, delivering a unique and immersive auditory experience. 4. [Simple to Use] No sound cable connections required. Simply tighten the discharge needle, adjust the power and frequency, and insert to enjoy the dazzling and melodious light show effortlessly. 5. [Perfect Teaching Tool] Featuring wireless transfer and speaker functionality, this desktop toy can light up gas tubes and various bubbles, making it an ideal educational tool to ignite students interest in science through captivating demonstrations. Specification: Item Type: Coil Desktop Toy Material: ABS Plug: AC100-240V 50 60HZ Rated Power: 60W Discharge Frequency: 5-45Hz ±10% (Lightning Mode) Arc: Approx. 0-10cm / 0-3.94in Color: Frosted White. Package List: 1 x Coil Host 1 x Discharge Needle 1 x Induction Needle 4 x Small Light Bulbs 1 x Glass Tube 1 x Accessory Storage Box 1 x Power Adapter 1 x User Manual