Condition New/Unworn Edition Limited Edition Case Shape Round Case Dimensions 43mm Case Material 18kt King Gold Dial Color Black Crystal Scratch Resistant Sapphire Screw-in Crown No Water Resistance No rating Does not allow contact with water 30m/99ft – 50m/165ft Allows for contact with water such as washing hands and rain 50m/165ft – 100m/330ft Allows for light poolside swimming 100m/330ft – 200m/660ft Allows for swimming, snorkeling and showering (do not expose to hot water) 200m/660ft – 500m/1650ft Allows for impact water sports such as board diving and scuba diving 500m/1650ft Appropriate for serious deep water diving. Learn more about Water Resistance. Close 100m/10atm/300ft Case Back Transparent Band Material Rubber Color/Finish Black Clasp Push Button Deployant Buckle Movement Automatic An automatic/self-winding movement is powered by a thin spiral torsion spring, called the mainspring, which is housed in an enclosed barrel inside the movement. The energy produced from the wound spring drives the movement functions. An automatic watch has a weighted rotor mounted on a pivot to the back of the movement, and the rotor is connect to the mainspring through a series of gears. The natural motion of the wearers wrist will cause the rotor to spin, which in turn will automatically wind the mainspring. Please note: An automatic winding watch which has completely wound-down or is at the end of its power reserve requires manual winding. Manually winding an automatic watch ensures that the watch is at full power-reserve when first worn, and as long as the watch is in motion thereafter it will remain fully wound, ensuring that when the watch is removed it will run the specificed power-reserve duration. Close Complications Chronograph Special Edition: Big Bang 20th AnniversaryLimited edition 250 pieces• Case: 18kt king gold – brushed & polished• Crown: 18kt king gold• Bezel: black, ceramic, polished, secured with 6 polished "h" style titanium screws. black composite resin "bezel lug".• Dial: black – brushed, stamped carbon pattern• Hour Markers: applied, rose gold, numeral & index combination, brushed, luminous• Hands: brushed, rose gold, luminous• Seconds hand: sub-dial at 9 o’clock, luminous• Date: window at 4.30 o’clock• Calibre: Hublot calibre HUB1280, beats at 4Hz/28800 vph, 43 jewels, power reserve of 72 hours (3 days)Watch functions:• Chronograph: Flyback function. Column wheel mechanism. Large central seconds counter hand, 60 minute counter sub-dial at 3 o’clock. Mens Hublot 431.OM.1338.RX Big Bang Chronograph 43mm Watch
