
This handsome luxury wrist watch belong to the brand’s Class El Primero T Open series for gents. But, despite being labeled for men, the timepiece isn’t too large for women so that those who are going for a masculine flavored wrist accessory can also wear it, too.
As expected from Zenith, behind its gorgeous appearance, there are carefully selected materials and components that are finely executed with such precision craftsmanship to ensure that the watch’s beauty, as well as its sophisticated offerings would remain as is for decades.
Similar to its other variants, this Zenith 03-0510-4021-02-C683 watch’s well crafted round case that is made of high quality stainless steel has a diameter of 40mm and approximately 15mm thick. Meanwhile, its Black bracelet that is made of genuine alligator-skin measures around 22mm wide. The timepiece is comfortable to wear thanks to the ergonomic design, and for convenient fitting, its supple yet supportive strap comes equipped a “Zenith Star” stamped, adjustable deployant folding clasp in stainless steel.
Allowing you to take a glance at the workshop-crafted Zenith’s caliber El Primero 4021H inside, the back of the case features sapphire display, while its Silvered dial is open worked at the 10 o’clocks position to shows you the heart of the movement.

This Zenith 03.0510.4021/02.C683 T-Open watch’s dial itself is fascinating, too. Bright in Silvered White and decorated with central diamond-pattern guilloché, this dial is fashioned in such manners that makes it looks good, and quite easy to read despite of its complication.

Anyway, for all of its quality offerings, this men’s Stainless steel on Black crocs leather Silver guilloché dial Zenith El-Primero T Open 03.0510.4021/02.C683 chronograph automatic watch is reasonably priced with an original manufacturer suggested retail price of $8,100.00.
Watch Specification
Brand: | Zenith |
Collection: | Class El Primero |
Series: | T Open |
Model number: | 03.0510.4021/02.C683 Ref. 03-0510-4021-02-C683. also referred as 03.0510.4021/02.C683. |
Watch style: | Gents, Dress, Elegant, Contemporary |
Display type: | Analog |
Movement: | Swiss automatic Zenith El Primero 4021H. In house, Le Locle mechanical manufacture calibre El Primero 4021 H that is developed, built and workshop-crafted by Zenith. Swiss made, automatic self-winding mechanical movement. Chronometer grade certified by C.O.S.C. |
Functions: | Hour, Minute, Small Seconds, Chronograph, Power Reserve |
Dial: | Silver Central guilloché decorated Silver dial with open-work at 10 that shows the “heart” of the El Primero caliber. Rhodium faceted hour and minute hands. 18kt rose gold power reserve hand, with black nickel coating. Rhodium hand-mounted applique, alternating arrows and Arabic numeral hour markers. painted Black minute markers around the outer rim. 30-minute counter at 3. Power reserve indicator at 6. small seconds with a 3-branched hand at 9. |
Window: | Sapphire Crystal scratch resistant, anti-reflective coated on both sides. |
Case: | Stainless Steel Round, Ø 40 mm w/o crown, 47 mm lug to lug, ± 15 mm thick. high polished with satin finished horn. |
Bezel: | Stainless Steel stationary bezel. mirror polished. |
Caseback: | See-thru stainless steel with sapphire display. secured with 8 screws, engraved. |
Crown: | Non-screw crown Stainless Steel. fluted. logoed. with two steel pushers alongside. |
Bracelet: | Alligator / Crocodile leather Black, textured pattern. Handmade, features tonal stitching. ± 22 mm wide, ± 7.5 inches long --men standard length. |
Clasp: | Deployant folding clasp Stainless Steel, stamped, adjustable. |
Notable Features: | Calendar Chronograph Open-worked dial Transparent exhibition caseback |
Water resistant: | 50 m (5 ATM / 165 feet) daily wear, capable to withstand splashes of water and very light rain. |
Additional info: | - |
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