Omega SA 2500, 2520, 1538 Coincide with a given time signal, Second Time Zone calibre 1128, fig

Self-winding GMT & GMT Chronograph

3.Setting the time: hours – minutes – seconds. Pull the crown to position 3. The seconds hand will stop. Turn the crown forwards or backwards. Synchronise the seconds by pushing the crown back to position 1 to

30coincide with a given time signal.

SECOND TIME ZONE (calibre 1128, fig. VI)

Thanks to the “24-hour” hand with its triangular point, travellers can read the time back home at a glance on the 24-hour scale on the rotating bezel. In order to do so, the triangle on the bezel must point to 12 o’clock on the dial.

The bi-directional turning bezel (calibre 1128)

allows a third time zone to be read. To do so, the bezel must be turned so that the “24 hour” hand points to this third time zone on the bezel. When read off against the scale on the bezel, the “24 hour” hand will then indicate the time in this third time zone.

In order to read the time back home, the triangle of the bezel must be returned to point to 12 o’clock on the dial.

SECOND TIME ZONE (calibre 2628, fig. VII, calibre 3603, fig. XX)

Thanks to the “24-hour” hand with its triangular point, travellers can read the time back home at a glance on the 24-hour scale at the centre of the dial.

CHRONOGRAPH FUNCTIONS (calibre 3603, fig. XX)

•Pusher A: start – stop, start – stop, etc. Timing to within 1/10th of a second for up to 11 hours.

•Pusher B: reset (after stopping).