Using 5V 2A TYPE C USB 2. There are RGB LEDs available 3. Use DS3231 high-precision timing IC (excluding backup battery, self provided) 4. PCB size: 163x35 millimeters 5. Function: Display model 24 hours a day, refresh every 1 to 9 minutes to set digital display, no alarms. 6. Package content: One set of Spade wood kit, without tubes, excluding IN14 tubes. You need to prepare 6 tubes for welding yourself. 7. The version is constantly updated, so the image depends on the actual product. 8If you dont have tubes, please dont buy it. The kit does not include tubes. We do nt have tubes for sale. We only sell circuit boards and matching shells. The size of the shell can only match our board. ? The product only includes the packaging content as shown in the picture, and does not include other products.no have 6 tubes . 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. Due to the use of CNC machining on wood, manual processing of burrs and oiling may cause some imperfections. If you are pursuing perfection in defects, please take a detour. IN14type tubes 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,Click SET to change 1-5 LED brightness . 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.