Zenith 03.2160.4047/01.c713 El Primero Chronomaster Open Grande Date Mens Watch. 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. Flat silvered dial with contrasting silver outer rim with printed black minute indicator track. Faceted polished steel colored hands & applied indexes with luminous tips. Tachymeter scale printed on outer flange/rim of the dial. Moon & Sun-phase for AM/PM indication sub-dial is located at the 6 o'clock position. Large date at the 2 o'clock position. Unique & patented 3-disc Grande Date system