Bulova Accutron TE-14 Calendar Clock with 1000-day resettable counter, shown in normal operation. Note the instantaneous day cycling operation which occurs about two seconds before midnight.

Bulova Accutron Series 214 timepieces: Swiss chapter ring Spaceview 214 M6 (1966) and Astronaut N 214HN M9 (1969), shown in normal operation, including demonstration of luminous function.

Bulova Accutron Astronaut N and Seiko SKX781 'Orange Monster', comparison of luminous function.