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Close 100m/33f0t Case Back Transparent Band Material Rubber Color/Finish Black Clasp 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

• Brushed & polished black ceramic case.
• Brushed finished black ceramicbezel with a ridged edge, secured with 6 H style screws.
• Case sides with lateral black inserts.
• Titanium crown & chronograph buttons with blackrubber tips.
• Black dial.
• Applied brushed finished applique style Arabic numeral & index hour markers.
• Brushed finished hands with luminous filled tips.
• Redprinted minute track with 5 minute Arabic numerals in whiteintervals on flat black rim on the dial flange.
• Small seconds sub-dial at 9 o’clock.
• Date window between 4 & 5 o’clock.
• Chronograph stopwatch functions:
  • Large red central seconds counter hand.
  • 30 minute counter sub-dial at 3 o’clock.
  • 12 hour counter sub-dial at 6 o’clock.
• Hublot Caliber HUB4100, beats at 28,800 vph, contains 28 jewels & has an approximate power reserve of 42 hours.

Alternate model # 301cm130rx

Mens Hublot 301.cm.130.rx Big Bang Chronograph 44mm Watch