2 Set Electronic Accessories: 1 x Digital Clock LED & 1 x Mini Music Tesla KitLED Display: There are three combinations of red green LED, red blue LED and blue white LED to choose from. Users can also switch to other color combinations of LED. There are 13 kinds of display, which can be switched by keys.It can also be set as automatic switching display (set in "LED automatic switching display settings").When the switching display parameter x is less than 60, the switching display time is x x 1minute, when it is more than 60, the switching display time is (x-60) x 60 minute, and when x=0, the switching display is not automatically switched. For example, when set to 30, switch to the next display every 30 minutes. When set to 62 (greater than 60), switch to the next display every (62-60) x 60 minutes (that is, 2 hours).Clock Accuracy: Using DS1302 as clock chip, it can use clock auto-calibration function to improve travel time accuracy.Time Setting: you can set the time by pressing the button. When the clock chip is properly equipped with backup batteries, even when the clock is powered off, it will go normally without resetting the time every time the power is turned on.Automatic Clock Calibration: Because this clock is a suite, the clock will inevitably have errors after welding, in order to maximize the accuracy of the clock, so do this function. Clock error can be corrected by setting error time and error amount. For example, if the clock is 2 seconds faster every 24 hours, then the error time is set to 24, and the error amount is set to -2. If every 24 hours is 8 seconds slow, the error time can be set to 3, and the error is set to 1.Operating Temperature: -20~+40Condition: NewType: Voltage RegulatorModel Number: Tesla CoilApplication: Music Tesla CoilFunction Introduction:Digital tube display: Thereare red, green, blue and white digital tubes to choose from. Users can also switch to other color digital tubes by themselves;Power-on defaults to the time, temperature, year, month, day, week display, through the button can be set only to show time or only show time and temperature (set in the "time display settings").Circuit parameters:Operating voltage: DC 15-24V, current 2APower: about 15WPower supply interface: DC5.5 x 2.1 compatible 2.5Audio interface: 3.5 jack, you can connect the phone, mp3, computer audio source.(the computer audio interface is 3.5, the audio line uses 3.5 to 3.5 audio lines, the mobile phone and the MP3 interface are different, please use the corresponding audio line to turn 3.5)Board size: 8.5cm x 3.1cmCoil size: diameter 2.05cm, height 6.8cmWire lap: 350 laps, coil diameter 0.15 enameled wireColour:as shownMaterial:plastic+ABS+ copperPackage Contents:1 x Digital Clock LED1 x Mini Music Tesla KitOnly the above package content, other products are not included.Note: Light shooting 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.