1. The circuit mainly consists of a pulse generator and a decimal counter circuit, with simple operation. 2. The pulse generator is composed of NE555 and peripheral components to form a multi harmonic oscillator, with stable performance. 3. This kit configures 10 LEDs into a circle, which starts working when the power switch is turned on and the button is pressed, making it easy to use. 4. Adopting full process processing, large solder pads, thicker wires, and beautiful component layout. 5. This circuit is particularly suitable for beginners to use, with strong interest, obvious effects, and low production difficulty. It is material for assembly practice, skill training, etc. Power supply voltage:6V Battery model:CR2032 Functional gameplay: The lucky wheel is a tool that first predicts where the rotating disk stop when it stops. It can also be used as number estimation games, electronic dice, lottery machines, etc. The electronic lucky turntable achieves the same function electronically. This kit configures 10 LEDs into a circle. When the power switch is turned on and the button is pressed, each LED turns on in turn. At the beginning, the flow speed is very fast, and it looks like all the LEDs are flashing together. The flow speed become slower and slower, and finally it stop on a certain LED and no longer move. If the LED that lights up in is the same as the player's prediction, it means "winning". Note:Due to different production batches, the appearance and color of electronic components , which does not affect use. Type:DIY Kit(Requires assembly before use) Colour:Black Material:PCB+electronic components Size:PCB board size:diameter 68.8MM Package Contents: 1 * Electronic Lucky Turntable 2 * CR2032 Battery Only the above package content, other products are not included. Note: Light reflection 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.