Built-in highly sensitive microphone (voice control) No less than 8 display modes 4 levels of brightness adjustable, 5-level speed adjustable 18 color modes adjustable, Comes with automatic gain control Exclusive intelligent de-noising algorithm, can be used in noisy environment Product parameters: Input voltage: more than the DC 5V 1A Input interface: -USB Frequency response: 50-16KHZ ptical characteristics (wavelength): Red: 620-625nm Green: 520-525nm Blue: 460-470nm Optical characteristics (brightness) Red: 450-550mcd Green: 1300-1500mcd Blue: 350-400mcd Instructions: MODE/SPEED key: Short press to turn white-select mode; long press to turn red-select 5 speeds COLOR/BRIGHT key: Short press to turn white-select color; long press to turn green-select 4 levels of brightness Press two keys at the same time: Press at the same time to turn blue-to learn the environmental noise spectrum Press and hold COLOR at the same time when power on: enter gain setting mode Power on (battery model only): Press the COLOR key after power off Shut down (battery model only): keep face down for 3 seconds Style:32 beads Colour:Silver Material:Alumina Size:20 x 5 x 3cm Package Contents: 1 * RGB Light Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.