The Venus 152 watch movement, developed by Seiko, is an updated version of the 29 movement with the addition of a digital display. This movement features a manual-wind mechanism and includes functions such as a jumping hour digital display for minutes, a sweep second hand, and a calendar that can be set by changing the time from 21:30 to 24 hours. The stem mechanism does not utilize a setting-lever spring, and the Seiko-Diafix combined settings are implemented for the escapement wheel. The Venus 152 movement was commonly used around 1966.