Luminox Navy SEAL 3500 "Semper Fortis" Honors the Spirit of "Ever Strong"

Quiet Strength, Illuminated

Luminox expands its Navy SEAL collection this summer with a new limited edition that focuses as much on symbolism as on functionality. The Navy SEAL 3500 "Semper Fortis" is limited to 775 pieces and celebrates the phrase "Semper Fortis" — Latin for "Ever Strong" — which has long been associated with the U.S. Navy. While retaining the robust specifications of the established Navy SEAL 3500 series, the tool watch introduces a unique dial execution and an all-Carbonox construction. The limitation of 775 pieces references the year 1775, when the U.S. Navy was established. 

A Message That Emerges in the Dark

The defining feature of the new model is its stealth-inspired black dial. Between 8 and 11 o'clock, the words "SEMPER-FORTIS" are applied in Superluminova, while the English translation, "EVER STRONG," appears directly beneath in red. During the day, the red lettering serves as a discreet reminder of the watch's inspiration. As darkness falls, however, the Latin phrase gradually illuminates and takes center stage, reinforcing the concept of resilience and determination that is at the heart of the watch.

Full Carbonox Construction

The watch is based on the familiar 45mm Navy SEAL 3500 platform with its distinctive turtle-shaped case. For this edition, Luminox extends the use of its lightweight Carbonox material beyond the case to include the unidirectional rotating bezel and the matching bracelet. The proprietary, ultra-lightweight carbon-based composite material is six times lighter than steel and three times lighter than titanium, while offering anti-allergenic, anti-magnetic and highly scratch-resistant properties. Measuring 45mm in diameter and 14mm in height, the watch is water-resistant to 200 meters.

The Navy SEAL 3500 "Semper-Fortis" also features the brand's signature Luminox Light Technology (LLT), which uses self-powered illumination tubes to provide constant readability in any lighting condition for up to 25 years — without requiring an external light source or battery power for the luminous display.

At the heart of the watch is the Swiss Ronda 515 quartz movement with an estimated battery life of approximately 50 months. The screw-down stainless steel caseback is engraved with the Navy SEALs logo, while the stainless steel screw-down crown bears the Luminox logo. The watch weighs 94 grams and has a lug width of 24mm. Pricing is marked at $695.