Super Titanium™ is CITIZEN's proprietary engineered material that takes solid titanium and treats it with Duratect α*5, leaving a material that is 40% lighter than stainless steel, with a surface more than five times harder. Protected by a sapphire crystal, the watch is hypoallergenic and resistant to rust, scratching and water, achieving a perfect balance between strength, sleek design and daily comfort. It’s an accomplishment only made possible by over 40 years of history which CITIZEN has devoted in the development of titanium-processing and surface hardening technology.