














Zenith Defy 21 Chroma Chronograph Ref. 49.9010.9003/01.R947
The Watch & Movement
Zenith Defy 21 Chroma Chronograph reference 49.9010.9003/01.R947. Inside is the trusty automatic calibre El Primero 9004 movement, with a 50 hour power reserve.
Case size is 44mm, with a lug to lug width of 50.5mm and thickness of 15.5mm. Lug width is 23mm.
This Zenith comes on it’s original rubber strap and deployment clasp. Included is the box, booklet, hang tag and warranty card, dated 2022.
We always prefer this! 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. The more watches we get to handle, the better.
At Mainspring, we bring our passion for horology and cars to life through our YouTube and podcast series, Chasing The Grail.
From our weekly Let’s Talk episodes, where we dive into our watches and cars of the week, explore new arrivals, discuss the latest news and unpack key topics across the industry, to our Reviews, covering everything from individual watches and cars to the brands behind them — there’s something for every enthusiast.
Alongside these, we have a growing mix of other series, features and conversations from across the world of watches and cars.
We’d love for you to join us. Subscribe to Chasing The Grail for weekly content, insights and conversations from the Mainspring team.
All watches are thoroughly checked over by our in-house watchmaker.
We own our stock! We don’t sell other people’s watches on consignment.
We offer 0% finance (via Humm, up to 12 months).
Over 1500 positive 5-star reviews!
You can visit our watch showroom. We are based in Farnborough, GU14.
We check our watches against the Watch Register to verify status and provide you with peace of mind.
If you have any questions or require further assistance, please don't hesitate to reach out.

