The UTC-Unitime 29C watch movement is an open face calibre that features an early common spring, which was later upgraded to incorporate separate springs for the operating lever and balance stop. Throughout its production period, the movement underwent many further detail modifications. It offers various functions, including a timer with options for precise measurements of 60 seconds (0.2 seconds accuracy) and 60 minutes, controlled by a pillar wheel. Additionally, there are options for a 30-second (0.1 seconds accuracy) timer with a 30-minute duration and a 3-second (0.01 seconds accuracy) timer lasting up to 180 minutes. The watch movement is stem wind with a sweep second hand and a sub-minute display.