The Circadian — Pre-order
PRE-ORDER — Estimated shipping December 2026.
Always ready. Ever vigilant.
The Circadian honors the eight-hour rotation familiar to submariners. Its bezel carries three reminders of that rhythm: ON WATCH, ON-COMING, and OFF-GOING. Wherever you are in the rotation, the commitment remains the same: always ready to respond, ever vigilant.
The Circadian introduces Tenacity Watches’ first Swiss movement, the Ronda 515, with a 24-hour display that reflects life on the watch.
Two versions. A release of 300 watches.
- Red, White & Blue: $379.00 — 250 available for this release.
- Blue, Gold & White: $399.00 — 50 available for this release.
Specifications
- Swiss-made Ronda 515 movement
- 24-hour display
- Stainless-steel case
- Sapphire bezel with printed markings
- Flat sapphire front crystal with date magnifier
- Stainless-steel and sapphire-glass caseback
- Solid stainless-steel bracelet with safety buckle
- Green luminous dial markings and hands
- Screw-down crown
- Water resistance: 10 ATM
Images show design renderings.
Regular Orders: After you place your order with Tenacity Watches, we'll pack and ship your order within 3-5 business days. Our business days are Monday to Friday.
Pre Orders: We provide an estimate date of shipping on the product page, but that can vary based on a number of factors. We do try our best to ship as soon as possible.
We ship most orders using Insured Fedex Shipping. Some orders may be shipping via USPS/UPS if Fedex isn't available.
Average Transit Time: 2-5 days
If there are delays due to COVID or bad weather, please be patient. We will ensure you receive your product as soon as possible.
