ZENITH CHRONOMASTER 1969 EL PRIMERO OPEN REF. 03.2040.4061/23.C496 AUTOMATIC CAL. 4061 (PR: 50H)

Stainless steel case, completely polished finished except for the top of the lugs which have a fine brushed finished.
Unique cutaway in the dial exposes the heart of the movement - the escapement. The cutout is surrounded by a polished steel rim secured in place by 3 gun-metal blue screws.
Grey sunray dial with blue and white subdials.
Contrasting silver outer rim with printed minute indicator track.
Faceted rhodium hands & applied indexes with luminous tips.
Tachymeter scale printed on outer flange/rim of the dial.
The Famous El Primero Movement with a "Column Wheel" Chronograph stop/watch:
Large red central seconds counter hand.
30 minute sub-dial counter located at the 3 o'clock position.
12 hour sub-dial counter located at the 6'oclock position.
Running seconds sub-dial located at the 9 o'clock position set into part of the cutaway display.
Zenith El Primero Caliber 4061 beats at 36,000 vph, 31 Jewels, 282 components & an approximate power reserve of 50 hours.