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The Model 1 Sullivan is our flagship automatic timepiece, featuring our patented innovation that lets you seamlessly switch between a sapphire exhibition caseback and a personalized casecap®. This transforms traditional engraving into a storytelling canvas - whether it’s a design, date, or symbol that matters to you.
Inspired by Chicago architect Louis Sullivan’s “form follows function” philosophy, the Model 1 embodies craftsmanship and adaptability, evolving with your milestones.
Features
- Case: 42mm diameter, 12.46mm thickness, 51mm lug-to-lug and 22mm between lugs
- Movement: Swiss Made Sellita 279-1. Automatic self-winding mechanical with ball bearing, 38 hour reserve, 31 jewels.
- Glass: Sapphire crystal with anti-reflective coating. Sapphire exhibition caseback.
- Functions: Hours, minutes, small second, power reserve and date indicator.
- Dial: Matte dial with sun-ray embossed small second sub-dial at 9. Applied Arabic index with printed second track and Super-LumiNova Grade A markers at each hour. Skeleton hands with Super-LumiNova Grade A tips.
- Crown: Oversized stainless steel onion crown with embossed Hampden logo.
- Bands: Brushed 22mm wide three link stainless steel bracelet with deployment clasp and easily removable double pin system. Includes two additional straps: Italian leather strap and one Italian leather/rubber strap; easily interchangeable with quick-release (no tools required).
- Water-Resistance: 5 ATM / 50 meters / 164 feet
- 5 year limited warranty
Swiss Made
- Swiss Made in La Chaux-de-Fonds - birthplace of the world’s finest watchmaking traditions
- Sellita SW279-1 Automatic Movement - a masterfully engineered self-winding caliber with ball bearing
- 38-hour power reserve - refined reliability for everyday wear
- 31-jeweled movement - ensuring precision, durability, and fluid motion
- Exhibition caseback - an elegant window into the artistry of Swiss mechanics
Group gifting
Show your appreciation to esteemed employees, valued clients, bridal parties or more by presenting them with a one-of-kind customized watch. Volume discounts are available. Our team is happy to discuss pricing and next steps. For more details, please contact us.
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YOUR WATCH. YOUR STORY.
Most watches offer the opportunity to engrave a few words. The Sullivan offers an entire canvas.
We've invented and patented a removable Casecap® which transforms the full caseback into space for storytelling. Whether it’s a hand-drawn sketch, a meaningful date, a symbol of identity, or a note from someone you love — this is personalization without limits.

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Make Every Watch An Heirloom





Family-Owned in Chicago Since 1922

Four Generations of Family Watchmaking
Family-Owned in Chicago Since 1922
For over a century, our family has been assembling watches in the heart of Chicago.
Now in its fourth generation, Hampden continues a proud father-son tradition — crafting meaningful timepieces that honor the past, celebrate the present, and last for the future.

join us in chicago
FIRST HAND: A WATCHMAKING WORKSHOP BY HAMPDEN
An intimate, hands-on mechanical watchmaking experience at our Chicago HQ.
Join a select group of guests for First Hand — our immersive, six-hour watchmaking workshop at Hampden’s historic Chicago headquarters.
Guided by our CEO and master hosts, you’ll assemble a Swiss mechanical timepiece, gear by gear, in a workshop hailed by Hodinkee as one of the Best Watch Classes in America.
Limited seats available.





