Titanium is a lightweight, durable, and corrosion-resistant metal widely used in watchmaking for cases, bracelets, and components. Renowned for its high strength-to-weight ratio, titanium is about 45% lighter than stainless steel while offering comparable or greater strength, making it ideal for large or robust watches that remain comfortable on the wrist. Its natural resistance to corrosion, including from saltwater and sweat, makes titanium especially popular for dive watches and sports models. Titanium is also hypoallergenic, reducing the risk of skin irritation for wearers with sensitivities to other metals.

In addition to its practical benefits, titanium has a distinctive matte gray appearance that sets it apart from the polished look of steel or gold. Watchmakers often use different grades of titanium, with Grade 2 and Grade 5 (an alloy with aluminum and vanadium) being the most common. Grade 5 titanium is particularly valued for its increased hardness and ability to be polished to a higher sheen. Despite its advantages, titanium can be more challenging to machine and finish, which can increase production costs. Nevertheless, its unique combination of lightness, strength, and modern aesthetics has made titanium a favored material in both luxury and tool watches.