Stainless steel case with polished finished edges & a brushed/satin finished top. Crown: Polished stainless steel crown. Patented "Triplock" locking crown crown ensuring that the crown screws down onto the Oyster case as securely as a submarine hatch. Bezel: Stainless steel with a ribbed edge for a sure grip. Bi-directional rotating bezel with 24 hour markings. Blue & red Cerachrom bezel insert, made of highly durable ceramic that is extremely hard, highly scratch-resistant, has excellent corrosion resistant properties & is unaffected by ultraviolet rays so the color will not fade. Matte platinum coated numbers & graduation indexes. Bracelet/Buckle: Stainless steel bracelet with brushed outer links and polished center links. Folding Oysterlock safety clasp. Fitted with the patented Easylink 5mm extension link. Dial: Black dial. Applied polished hour markers with luminescent fill. Polished hands with luminescent fill. GMT/2nd Time Zone Function: GMT/Dual Time zone is indicated by the red hand with the luminous arrow-head tip pointing to the 24 hour indications on the bezel. NOTE: The GMT hour hand makes a single revolution once in 24 hours. Rolex Caliber 3285 with a Paramagnetic blue Parachrom hairspring, and high-performance Paraflex shock absorbers. Chronergy escapement with optimized energy efficiency. Beats at 28,800 vph, contains 31 jewels & has an approximate power reserve of 70 hours.