Note:without tube, just a Circuit Board.       5V Electronic DIY Kit in14 Nixie Tube Module Digital LED Clock Gift Circuit Board Kit PCBA No tubes           1. 5V 1A micro usb           2. 7 colors(has RGB led.bottom light color,not the number light color)           3. Use good timing IC           4. Dimension：187x48mm           5. Function：24hours Display model、every 5mins refresh display、No alarm.           6. Package Contents :1x circuit board, No Tubes           7. The version is constantly updated, so the picture is subject to the actual product.           8.     If you don’t have tubes, please don’t buy it. The kit does not include tubes. We don’t have tubes for sale. We only sell circuit boards and matching acrylic shells. The size of the acrylic shell can only match our board.                     light pipe can be used directly.        the use of imported high-precision clock chip, a year less than 1 minutes error.using integrated IC drive program, the display is more stable and reliable        Item Type: Repair Tools & Kits        Feature: circuit board kit        Type: Watches for Parts        function: 24 hour mode, time display, anti poisoning program (every 10 minutes refresh the monitor), no alarm, remote control is not supported        IN14 Nixie Clock User Manual        2,Function:        2.1.Time        2.2. Colors back light(7 colors)        2.3. 12/24 hour module        2.4. Sleep module(22:00~07:00 no display. 07:00~22:00 display)        2.5. Refresh time setting(1~9 minutes) 3,Opertate:        3.1.Set Time: Click "SET" key into setting time. Click "Up","Down" to set time, and click "Set" to finish.        3.2.12/24 hour module: Click "Up" key to change        3.3.Sleep module. Click "SET"long, while no display , into sleep module(22:00~07:00 no display. 07:00~22:00 display). Display all "0"number,out of sleep module.        3.4.Set refresh time: Click "UP" long, and click "UP"or "Down". refresh can be set 1~9 minutes,        3.5.Set back color: Click "Down" to change color. when color refresh that means it is into change color automatic (every day change one color),or color is fixed.        4,Manufacturing requirements: Tubes white pin need solider to PCB white pin.