Features: This kit allows the 9x9 LED matrix- to display different graphics by adjusting two potentiometers. The graphics can move quickly or slowly, giving the visual effect that the LED lights are chasing each other, so it is called a for chase light. "Electronic Dice " fun electronics game diy kit for you to enjoy the pleasure of having assembled and soldered it yourself 97X73MM Made of high quality PCB board and electronic pieces kit. The delivery is in pieces and needs to be welded by yourself , so special assembly skills required Based on fun circuit counter display kit. Can simulate the dice, make fun of the game.. Specifications: Item: LED Module Kit Kit Model: CHA-81 Voltage: 5-9V Power Supply: USB or Battery PCB Size: approx 97x73mm Weight: 55g Note: Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks! Due to manual measurement, please allow error of 0-1cm. Please make sure you don'for t mind before bidding. Package includes: 1 Set x LED Module Kit