Mini LED Luminous Finger Light Stage Flash Concert Colorful Ring Light LED Light Features: Turn on the switch and it will emit brilliant light. It has a battery inside and can not be replaced. It can last for tens of hours. One of the most popular LED Ring of the season An perfect LED Ring that you look more charm and attractive. Specifications: Size:3x2.5cm Material: Plastic Light source: alternating red green and blue Power: 0.2W Style: gradient Usage: turn on the power switch and it will light up Applicable occasions: Concert bar KT stage etc. Package including: 1 x LED Atmosphere Light Note: 1.Please allow 0.1-0.3cm differences due to manual measurement thanks. 2.Please understand because of the light irradiation or computer display difference so I can t guarantee photos and real color is 100% the same.