Feature: 1. [Neutralize Static Electricity] Negative ions can neutralize static electricity, generate a large number of negative ions moving at high speed during lighting, and purify the environment. 2. [Professional Design] Using the principle of aerodynamics, under the action of the thermal effect of the light, the negative ions are evenly and effectively diffused into the indoor space. 3. [Working Principle] Negative ions can neutralize positively charged smoke and dust, make it inactive and precipitate naturally, and can decompose harmful particles such as nicotine and formaldehyde. 4. [Touch Control] Put your hand on the light ball, the speed of light will come with the movement of your fingertips, very dynamic, just like your hand has magical power, very magical. 5. [Beautiful And Interesting] Strong playability, the lamp body is coated with fluorescent powder, after power on, the lamp body emits many wonderful and slender rays of light, which is very wonderful. Specification: Item Type: Plasma Light Material: ABS Ball Diameter: Approx. 3inches Working Mode: 5V USB cableor 4 x AAA batteries power supply (not included) Battery Specifications: 4 x AAA batteries (not included) Package List: 1 x Plasma Light 1 x Charging Cable 1 x Manual Note: Manual measurement, please allow some errors.