The AHO 1121 is a hunter calibre watch movement that was in use from 1928 onwards. It features a bimetallic screw balance with four adjustment screws and a Breguet hairspring. Additionally, it offers the functions of stem winding and setting, as well as a sub-second display. An optional cam disc regulator can also be incorporated into this movement.

The AHO 1121 features the following functions:

• Stem wind and set
• Sub Second