Product Features: Material: ABS Light Source: LED Size: 32 LED: 18*1.6*1.9cm Power Supply: 5V USB Software Support: Ambient Noise Filtering, Firmware Update Built-in High Sensitivity Microphone (Voice Control) 32 Color Lamp Beads No Less than 8 Displaymode 4-level brightness adjustable, 5-level speed adjustable, 18 color modes adjustable, built-in AGC automatic gain control, exclusive intelligent noise reduction algorithm, can be used in noisy environments Press to turn red to select 5 speeds COLOR/BRIGHTkey: short press to turn white to select color; long press to change to green - select 4 levels of brightness Press two keys at the same time: press to change to blue at the same time - learn ambient noise spectrum Power on and hold down COLOR atthe same time: enter Gain setting mode Power on (battery model only): Press the color key to power off after power off (battery model only): keep face down for 3 secondsDelivery Quantity: 1 PiecePackage Contents: Only the above package contents, excluding other products.Size: 32 LEDs: 18*1.6*1.9cm(Reminder: The size is measured by hand, please allow 1-2 cm measurement error)Colour: Black(Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)