Zenith El Primero SS Chronomaster T Open


Zenith 03.0240.4021/02.C495 El Primero Chronomaster T Open 03-0240-4021-02-C495, Stainless Steel on a Strap with a Stainless Steel Deployant Buckle, Automatic Movement, Chronograph, Silver Guilloche Dial with Silver Hour Markers, Power Reserve Indicator, Diameter: 40mm, Thickness: 13.5mm, Display Back, Sapphire Crystal, Water Resistant, Like New with Box and Papers.

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More about El Primero SS Chronomaster T Open

This is a stainless steel Zenith El Primero Chronomaster T Open, reference 03.0240.4021/02.C495. It has an alligator leather strap with a stainless steel deployant buckle, and a scratch resistant sapphire crystal. There are rectangular chronograph pushbuttons, and a heart-shaped open face area is between 8 and 12 o'clock that shows the escapement. It has a screw-down exhibition sapphire display case back secured with 8 screws, engraved with "Zenith – ChronoMaster – water resistant 30M – Stainless Steel," and the reference number. The gold guilloche rotor is engraved "El Primero," with the Zenith star, and "Swiss made manufacture Le Locle." The 40mm diameter solid two-body case, fluted downturned lugs, and stepped bezel are polished. It has a silver guilloche dial with applied steel dart hour markers on a brushed steel reserve with a minute/second track. There are steel dauphine hands, with a balanced center sweep chronograph hand. A "reserve de march" 50-hour power reserve indicator arch is at the 6 o'clock position, and a 30-minute totalizer sub dial inside a brushed ring is at 3 o'clock. It's water resistant to 30 meters/100 feet, and the 13.5mm thick case, dial, and movement are all signed. This Zenith El Primero Chronomaster T Open, reference 03.0240.4021/02.C495, runs on a mechanical automatic self-winding Zenith El Primero caliber 4021 column-wheel chronograph movement. It is rhodium-plated, with Côtes de Genève and oeil-de-perdrix embellishment. It's constructed with 39 jewels, 248 components, and a shock absorber device. It includes a straight-line lever escapement, a monometallic balance, a self-compensating flat balance spring, and an engraved rotor. The mechanism oscillates at 36,000 vph (5 Hz).

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