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The Watch & Movement

Zenith Chronomaster Power Reserve El Primero reference 03.2085.4021/51.C700. A fantastic conversation starter piece! The blue dial on this is truly mesmerising, with an opening to see the movement working and beating away. It can keep you staring at this piece for a while! This model is powered by an automatic 4021 movement, synonymous with the Zenith collection. A stunning work of master engineering, the movement is made up of 248 parts and 39 jewels, featuring a 36,000 VpH frequency and minimum of 50 hours power reserve.


This is a limited edition piece of 1975 made.



Case size is 42mm, with a lug to lug width of 50mm and thickness of 14.2mm. Lug width is 21mm.


What’s Included

This Zenith comes on it’s original blue Alligator strap with deployment buckle. Included is the box, booklets, purchase receipt from 2018 (£7,500, UK retailer) and warranty card, dated April 2018.



We tend to not polish our watches before listing for sale, this is because we have always preferred to keep as much metal on the watch as possible and preserve the shape. We are able to offer a polish as a free service, just let us know if you wish for this to be done and we can have our watchmaker complete. This will add 4-5 working days to dispatch.


Part Exchange

We always prefer this! Being enthusiasts, the more watches we get to handle, the better. We're always on the hunt for new and interesting pieces! Please get in touch with the watch you have, along with as much information as you can such as the reference & any photos - We'd love to give you a price.


Peace of Mind

All of the watches we source are rigorously inspected. Every watch is also checked against The Watch Register for lost/stolen goods for your peace of mind. A certificate from The Watch Register can be provided free of charge upon request.


Please do check our feedback across our selling platforms for added peace of mind and send us a message, we are always happy to help further and talk watches.


Many thanks for looking and we hope to hear from you soon.

Zenith Chronomaster Power Reserve Ref. 03.2085.4021/51.C700

  • Reference


  • Case Size


  • Box


  • Papers


  • Movement


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