The top is a gadget that has beenanded down from ancient times to today. The flash electronic top is a novel electronic ythat combines modern technology and tradition. It not only retains primitive connotation of top, but also reflects attractive charm of modern electronic technology. The gyro uses a single chip microcomputer to control 12 light-emitting diodes to flash in turn. The flashing time of each LED and flashing sequence are controlled by single-chip microcomputer. When electronic gyroscope rotates, the corresponding pattern and text appear. In order to improve stability of patterns and characters, adopts Hall IC to control regular display of pattern, that is, every time it rotates, the Hall IC senses magnet, and then model is fed back to microcontroller. The coin-cell battery is used for power supply, and microcontroller automatically enters low power consumption when battery gyro is turned off. When switch is pressed, the LED is turned on. Product name:two-page LED fingertip gyro DIY production kit Product model:TJ-56-307 Working voltage:DC6V (two 2032 button batteries) Product size:79x26x11mm Color:As Shown Material:Metal+Plastic Package Contents: 1 * Finger Tip Gyroscope DIY Kit Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.