Doxa SUB 300 Ti5: A Titanium Dive Watch for the Permanent Collection

Doxa SUB 300 Ti5: Titanium Meets Iconic Design

Following a limited edition earlier this year, Doxa has now added a titanium version of its beloved SUB 300 to the regular lineup. The new SUB 300 Ti5 keeps the vintage-inspired look that fans adore while upgrading the case material to Grade 5 titanium. This move not only reduces weight but also enhances durability, making it an attractive option for divers and collectors alike.

The watch retains the classic SUB 300 proportions: a 42.5mm case with a compact 45mm lug-to-lug and a thickness of 13.4mm, including the domed sapphire crystal. The entire case, along with the crown and caseback, is crafted from Grade 5 titanium, ensuring corrosion resistance and a matte finish. Water resistance remains at a robust 300 meters, suitable for professional diving needs.

Six Colorful Variants, Including a Luminous WhitePearl

Doxa offers the SUB 300 Ti5 in six signature colors: Professional orange, Sharkhunter black, Caribbean blue, Red Coral, Sea Emerald green, and WhitePearl. The WhitePearl models stand out with a fully luminous dial, where the entire surface is coated with Super-LumiNova, providing exceptional visibility in dark conditions. This variant is available with either a black or white rubber strap.

The dial construction is noteworthy: it consists of two layers of Grade 5 titanium. The upper layer has laser-cut openings, while the lower layer is sandblasted. All dive-related markings are treated with Super-LumiNova, ensuring readability underwater. The oversized minute hand and date window at 3 o'clock remain faithful to the original design.

Movement and Performance

Inside the SUB 300 Ti5 beats the Sellita SW200-1 automatic movement, which is COSC-certified as a chronometer. It operates at a frequency of 28,800 vibrations per hour and offers a power reserve of approximately 38 hours. The movement drives hours, minutes, central seconds, and a date function, with hacking seconds for precise time setting.

Strap Options and Pricing

All versions come on Doxa's textured Dive Flex rubber straps, secured with a pin buckle. Straps are color-matched to the dial for most models, while the WhitePearl offers a choice between black and white. The Doxa SUB 300 Ti5 is now part of the permanent collection and is available through authorized dealers and the brand's website. The retail price is set at EUR 2,990.

Buying Tips and Authenticity Notes

When purchasing a Doxa SUB 300 Ti5, ensure you buy from an authorized retailer to guarantee authenticity and warranty coverage. Check the reference number on the caseback to confirm the specific colorway. The WhitePearl variant, with its luminous dial, is particularly sought after, so verify its unique reference (823.50.011.20 or 823.50.011.23). Titanium is lighter than steel, so the watch should feel noticeably lighter on the wrist; if it feels heavy, it might be a counterfeit.

For those considering a pre-owned example, examine the case for scratches, as titanium is prone to marking, though it can be refinished. Ensure the bracelet or strap is original and that the movement has been serviced if needed. The COSC certification adds value, so verify the papers if available.

The Doxa SUB 300 Ti5 is a compelling choice for those seeking a robust, lightweight dive watch with a rich heritage. Its combination of titanium construction, vibrant dial options, and chronometer-grade movement makes it a worthy addition to any collection.