The Puw 2508 watch movement is a periodical electronic calibre that was introduced between 1967-1970. It features an electronically controlled balance motor, a sweep second function, and a date complication that can be set by changing the 23-24 hour markers. Additionally, it includes a hack feature, making it possible to stop the seconds hand for precise time synchronization. This movement is electronic, with a sweep seconds hand and a calendar function.

The Puw 2508 features the following functions:

• Calendar
• Date: set by changing 23-24h
• Electronically controlled balance motor
• Hack feature
• Sweep second