Features 1、The world's smallest coil. 2、Using a coil can generate high voltage and low current, high frequency AC power, which will produce magical effects. 3、This product uses a 20w power supply to generate high frequency, high voltage and low current arc spray effect for the coil. 4、Fluorescent lights can be easily turned on, suitable for various wireless transmission experiments. 5、5V 1W Coil A‑Class Super Mini Coil, no power supply. Specification Features: 1. The world's smallest coil. 2. Using a coil can generate high voltage and low current, high frequency AC power, which will produce magical effects. 3. This product uses a 20w power supply to generate high frequency, high voltage and low current arc spray effect for the coil. 4. Fluorescent lights can be easily turned on, suitable for various wireless transmission experiments. 5. 5V 1W Coil A-Class Super Mini Coil, no power supply. Specifications: Model: Coil Output voltage: DC5V Power: 20w Package List: 1 x Coil 1 x Stainless steel ball 1 x Neon Light 1 x OTG Cable Note: 1. Ultra-small size, the USB port can be connected with any 5V power supply. 2. Does not produce an independent air discharge arc, a good conductor near the top can generate an arc of about 1 mm, no electric shock, very safe. 3. It is not necessary to pull the coil to the coil or the hand when working. Because the hand acts as a good conductor, the coil will form a good loop. For the coil with a large current, the demonstration effect Change or not. Please note. Package List