5V electronic diy kit in14 nixie tube module digital led clock gift circuit board kit pcba no tubes The product is shipped based on the color or size of the main image of the product page. Note:without tube, just a Circuit Board. 5V Electronic DIY Kit in14 Nixie Tube Module Digital LED Clock 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. Dimension187x48mm 5. Function24hours Display modelevery 5mins refresh displayNo 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 dont have tubes, please dont buy it. The kit does not include tubes. We dont 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: Tools & Feature: circuit board kit Type: Watches for s function: 24 hour mode, time display, anti poisoning program (every 10 minutes refresh the mon ), no alarm, remote control is not supported IN14 Nixie Clock User 2,Function: 2.1. 2.2. s 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 : 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 it is into change color automatic (every day change one color),or color is fixed. 4, requirements: Tubes white pin need solider to PCB white pin.