IWC GST Split Second Chronograph SS Blue Dial

More about GST Split Second Chronograph SS Blue Dial

This is a stainless steel IWC GST Chronograph Rattrapante IW371528. It has an integral stainless steel link bracelet with a folding deployment clasp, and a domed scratch resistant sapphire crystal with anti-reflective coatings and pressure-drop resistance. It has fluted round chronograph push buttons, an additional push button for the split-second function on the left side case band at 10 0'clock, and a screw down signed winding crown. It has a screw down solid case back engraved with "INTERNATIONAL WATCH CO. – SCHAFFHAUSEN – RATTRAPANTE." The 43mm diameter solid three-body case, straight lugs, bracelet, and flat angled bezel, are polished/brushed. There is a dark blue dial with applied faceted baton hour markers around a luminous white minute/second scale on a raised reserve, and a white minute/one-fifth second scale is around the perimeter with Arabic numerals every five minutes/seconds to 60, marked in red. It has steel baton hands with luminous inserts, a luminous white center sweep chronograph seconds hand, and an additional red chronograph split second hand. It includes twin aperture windows for the day and date at the 3 o'clock position, and there are three recessed blue subsidiary dials with luminous white and red Arabic numerals, white markers, and luminous indicator hands. It's water resistant to 120 meters/400 feet, it has a 44-hour power reserve at full winding, and the 17mm thick case, dial, and movement are all signed. This IWC GST Chronograph Rattrapante IW371528 has a mechanical automatic self-winding IWC caliber 79230 (base ETA caliber 7750) chronograph movement. It's rhodium plated, with Cote de Geneve embellishment, and it's constructed with 29 jewels, a shock absorber mechanism, blued screws, and a straight-line lever escapement. It includes a monometallic balance that's adjusted to 5 positions, and a self-compensating flat balance spring. There is an index regulator, and a hacking seconds device for precision time setting, and the mechanism oscillates at a frequency of 21,600 vph (4 Hz). The IWC GST Chronograph Rattrapante IW371528 was introduced in the 2000's.

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