Automatic self winding, Diver professional set, Luminous hands and hour markers, Wetsuit strap extension, Helium escape valve for ascension from greater depths, Specially designed detachable bezel for easy cleaning, One way rotating elapsed time bezel, Solid titanium ratcheting bezel is engraved with black numbers and luminous dot, Bilingual (Spanish/English) analog day and date display, 6mm thick scratch resistant sapphire crystal, Screw-down crown at 9 o'clock position allows for easier wrist movement, 1000 meters/3333 feet water resistant