5Pcs Electronic Dice DIY Kit 5mm Red LED Interesting Parts NE555 CD4017 Electronic Production SuiteDescription: Electronic dice kit is based on the NE555 oscillator circuit and fun circuit CD4017 counter display kit. Can simulate the dice, make fun of the game. Parameters: Supply voltage: 4. 5 5VDimensions: 74 x 35mmNote: This is a DIY kit, you need to assemble it. Quantity: 5 setFunction: When a power up, 7 LED will randomly display a number of points, players press the switch S1,7 all lit LED only after about 7 seconds LED light starts blinking,