Genuine Omega® ratchet wheel, part number 1100, fits Omega® 540 screwdrivers individual sizes and an additional Chronograph indicator

and an additional Chronograph indicator (seconds recording) at the 2 o'clock position plus LARGE DATE at the 6 o'clock position

center wheel pinion has 12 teeth

High resistance to chemicals and low temperatures

Genuine Omega® hour indicator ring

Genuine Omega® large connecting wheel for winding gear

Genuine Omega® ratchet wheel, part number 1100, fits Omega® 540 screwdrivers individual sizes and an additional Chronograph indicatorGenuine Omega ratchet wheel, part number 1100, fits Omega 540 * Perrin Supply Ltd is independent of and not affiliated with or sponsored by Omega. Omega warranty does not apply to parts supplied by Perrin Supply Ltd.