We offer discount for large quantity. We invite you to ! Diy In12 In-12 Nixie Tube Kit Pcba Digital Clock Beautiful Gift, Without TubesSupported:1. Set Time: Long press the "Down" button to set the time. Click "Up","Down" to select the time, and long press the "Down" button to finish. 2.12/24 Hour Module: Click "Up" button to change3. Sleep module. Long press "UP" while no display, to the sleep module (22:00 - 07:00 no display. Display 07:00 - 22:00). Display all "0" numbers, except the sleep module.4. Set the color backwards: click "down" to change the color. When a color refresh means that it changes color automatically (changes one color every day) or the color is fixed. Power: micro-usb 5V 1Battery: Metal+pcColor: BluePackage Contents:1 * Circuit Board1 * Acrylic Case1 * Screw SetOnly 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 error is +/- 1-3cm. About UsWe provide good product with best price, we support wholesale order/