Description: Color dot matrix size: approx.30.2*15*0.8cm Controller size: approx.4.1*8cm Audio splitter length: approx.60cm USB cable length: approx.103cm 16-core data cable length: about 39cm Weight: about 310g (1cm=10mm=0.39inch) Measurement details in the attached picture. Feature: Using the latest SMD dual color dot-matrix display modules, more vivid colors and lower power consumption. Dot-matrix screen software using the original software filtering technology, spectrum effects has increased significantly. Spectrum display more gentle, no spikes appear. Sensitivity and sense of rhythm is better, visual effects more beautiful. Improved the other spectrum frequency is too rich, insufficient high frequency phenomena, the effect is more dynamic. With power off memory function. The streamlined design of the spectrum, not static and noise. Suitable for KTV, car modification, DIY amplifier, audio, home decoration. Tips: You need to prepare a 5V power supply for this Music Spectrum Display. 1. The 32*64 two-color dot matrix module can display red, green, yellow, 3 kinds of color combinations. Spectrum display 7 modes, one mode is the first 6 mode changes automatically. 2. The controller and display module requires a separate power supply DC 5V 5A. Please pay attention to the power supply negative and positive when wiring them. Or it will burn the module. 3. When the signal input port under disconnecting, spectrum is full screen, which is normal situation. Plug the 3.5mm headphone plug into the computer headset, there will show a line on the bottom. 4. If the noise is serious under the mute, the power supply ripple maybe too big. Please replace high quality low ripple 5V DC power supply. 5. By adjusting the input volume and gain settings to control the display, general computer volume up to 60%. Notice: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight deviat ion for the measurement data. 3. Please allow 1-3cm error. Package Included: 1 x Controller 1 x Color Dot Matrix 1 x Audio Splitter 1 x 16-core Data Cable 1 x USB Power Supply Audio Cable Test, for reference only.