• Brand: Zenith • Model: El Primero Open Heart Chronograph , In "Excellent" condition. Like New. All functions work perfectly. Comes with box. The First Automatic Chronograph Movement. Therefore it’s called “El Primero” , meaning “The First.” "Very Classy, Exclusive and Prestigious Model. A rare timepiece that every collector would want to own." • Reference Number: 03.1925.4062 • Movement: Automatic, Works perfectly. Impeccable at timing. Tested on Timegrapher. > Zenith El Primero 4062 Movement This 4062 Movement is an Enhanced Version of the Zenith 400 Movement. > Based: Zenith El Primero Cal. 400 In-house movement > Jewels: 31 > Power Reserve: 50 Hours > Frequency: 36000 (Hi-Beat) The El Primero Caliber 400 was working so flawlessly that it managed to attract the attention of even a well-established company like Rolex. After 1987, Rolex started using the Zenith El Primero Caliber 400 movement in its Daytona series watches, the most valuable watch. The Zenith calibre 400 was the only chronograph movement with automatic winding that passed all the high Rolex standards for a movement. But that did not mean that Rolex just bought the movements from Zenith and put them in the case. Some adjustments were made by Rolex before using the movement. The ancestor of the Rolex caliber 4030 is the Zenith caliber 400. That's why this movement is called Daytona. • Type: Chronograph, Works and resets perfectly. • Crystal: Sapphire, Scratch free. • Anti-reflective coating on the crystal • Swiss Made, Fully Original • Case: Stainless Steel • Case Back: Transparent , Very Classy. • Dial: Silver , In "Excellent" condition. Spotless. • Open Heart Design , Very Classy > Heart-Shaped Seconds Indicator at 9 o'clock > 30 min. Chronograph Dial at 3 o'clock • Roman Numerals Dial • Case Diameter: 37 mm. (Excl. Crown) • Crown: Original Zenith • Deployment Clasp , Folding and Lockable • Strap: Original Zenith, Genuine handmade leather and very compatible with the case and the dial. First Quality. 100% Genuine Calf Leather. • Clasp: Original, Zenith signed. • All functions work perfectly. • The watch is in "Excellent" condition. There is no scratch on the glass. It is as seen in the photos. Very Classy, Exclusive and Elegant model. • Box: Yes. • Shipping: FREE • Registered and Insured Shipping with Tracking Code in 1-3 days.