Timex has announced the Deepwater Meridian 300 Titanium HEV Automatic, a new mechanical dive watch. The release expands the company’s catalog with a focus on utilitarian materials and standard diving specifications, moving away from its typical budget-focused quartz models to offer a dedicated tool watch.

Timex Deepwater Meridian 300 Specifications
The hardware is built around a 44mm case machined from Grade 5 titanium. The watch measures 15mm thick and has a 51mm lug-to-lug distance. The use of titanium is a practical choice for these specific dimensions, as it reduces the overall weight on the wrist compared to standard stainless steel while maintaining a high level of surface hardness.
The case features a matte, bead-blasted finish and includes a ceramic inlay on the unidirectional rotating bezel, which is used for tracking elapsed time. The dial is protected by a sapphire crystal treated with an anti-reflective coating.


For water resistance, the Deepwater Meridian 300 is rated for depths up to 300 meters. This is supported by standard dive hardware, including a screw-down crown, integrated crown guards, and a threaded screw-down case back.
Timex has also included an automatic helium escape valve (HEV) located on the side of the case at the 10 o’clock position. During saturation diving, helium gas can build up inside a watch case; the HEV allows this gas to safely vent during decompression, preventing internal pressure from damaging the crystal.

Inside the titanium case is a Miyota 8215 automatic movement. It is a standard 21-jewel Japanese caliber that winds itself via the wearer’s wrist movement and holds a maximum 40-hour power reserve. If the watch is left motionless for longer than 40 hours, it can be manually wound using the crown.
Timex is offering two visual variations of the watch: one with a black dial and luminescent hour markers, and another with a green dial where the entire dial surface is coated in Japanese Nemoto LumiNova SG2200 for low-light visibility.

Both models ship on a 20mm black HNBR (Hydrogenated Nitrile Butadiene Rubber) strap. HNBR is utilized for its high resistance to UV rays, heat, and chemical exposure. The strap includes perforations for ventilation and water drainage, alongside quick-release spring bars for tool-free swapping.
Pricing and Availability
The Timex Deepwater Meridian 300 Titanium HEV Automatic is currently listed for pre-order in the US for $999.
In related news, Timex has recently unveiled the 1981 Reissue, a retro-inspired watch featuring an ice blue dial and a compact 35mm case.
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