IWC Portofino Chronograph IW391031

Model #: iw391031 IWC Portofino Chronograph Mens Watch

Polished stainless steel case. Silvered dial. Polished gold tone applied index & roman numeral hour markers. Minutes/seconds/fractions of seconds track indexes printed in black, with 5 minute increments printed in Arabic Numerals. Polished gold tone hands. Elegant leaf shaped hour & minutes hands. Chronograph/Stopwatch functions: Large central seconds counter. 30 minute sub-dial counter located at the 12 o'clock position. 12 hour sub-dial counter located at the 6 o'clock position. Regular running seconds hand sub-dial located at the 9 o'clock position. Sub-dial perimeters are slightly recessed with a fine concentric guilloche texture, Chronograph sub-dials also have a very thin polished steel rim on the outer edge. Day & Date window displayed at the 3 o'clock position. IWC calibre 75320, contains 25 jewels & beats at 28,800 vph & has an approximate power reserve of 44 hours. Condition : New/Unworn Case Shape : Round Case Dimensions : 42mm Case Thickness : 13.5mm Case Material : Stainless Steel Dial Color : Silver Crystal : Scratch Resistant Sapphire Screw-in Crown : No Water Resistance No ratingDoes not allow contact with water 30m/99ft - 50m/165ftAllows for contact with water such as washing hands and rain 50m/165ft - 100m/330ftAllows for light poolside swimming 100m/330ft - 200m/660ftAllows for swimming, snorkeling and showering (do not expose to hot water) 200m/660ft - 500m/1650ftAllows 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 : 30m/99ft 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 Case Back : Solid Band Material : Alligator/Crocodile Leather Color/Finish : Black Clasp : Tang 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