The Digital Clock Kit combines the historical beauty of modern technology with almost forgotten technology. It is a new generation of electronic kits consisting entirely of printed circuit boards (PCBs). Each kit includes 6 original digital tubes IN-12, which were manufactured between 1976 and 1980. If you are already thinking about where to put your own digital clock, then we recommend watching our video, which will undoubtedly inspire you. Integrated 1216 battery to save time and settings (needs to be replaced approximately every 10 years), up to 200,000 hours of life, with a guaranteed life of 25,000 hours, switching between 12 and 24 hour modes.