Product Details

• Brand: IWC
• Model: IW371513
• Band material: stainless-steel
• Bezel material: stainless-steel
• Case material: stainless-steel
• Clasp type: fold-over-clasp
• Dial color: copper
• Dial window material: scratch-resistant-sapphire
• Movement type: Automatic
• Water-resistant to 99 feet

Features

• Quality Automatic movement; Functions without a battery; Powers automatically with the movement of your arm
• Scratch-resistant-sapphire crystal
• Case diameter: 42 mm
• Stainless-steel case; Copper dial; Day-and-date functions; Chronograph functions
• Water-resistant to 99 feet (30 M)

Amazon.com Product Description
Designed for professionals who need to keep track of multiple timing tasks or watch collectors who crave the ultimate in technical sophistication, this IWC Chrono-Rattrapante (or double chronograph) stainless steel men's watch also offers an elegantly masculine style. This double chrono timepiece includes two separate stopwatch mechanisms in order to estimate two separate events of different durations. It also features two seconds hands, with one superimposed over the other. While one hand moves continuously, the other one can be whether stopped, started or reset to zero. The secondary stopwatch mechanism is controlled via a third button at the 10 o'clock position, while the main chronograph mechanism is operated by the two standard pushers on the right side of the watch.

This large, imposing timepiece measures 42mm wide (1.65 inches) and the stainless steel case features a brushed silver finish. The copper dial face includes three chrono wave-patterned subdials, a full Arabic numeral display, small minute/seconds indexes around the exterior of the dial, and a day-and-date window at 3 o'clock. The titanium bracelet band offers a triple-link design and a tapered profile as it winds around your wrist. Other features include a 23-jewel automatic movement with 28,800 vibrations per hour, a 42-hour power reserve, and water resistance to 60 meters (200 feet)--offering protection from accidental splashes and snow spray as well making it suitable for swimming.

An automatic (or self-winding) watch is fitted with a device (rotor) that automatically winds the spring by using the force of gravity. It needs no battery, but it will stop if you have been physically inactive for an extended period of time--as long as you're moving, the watch will stay powered. Swiss watchmaker Abraham-Louis Perrelet invented the self-winding mechanism in 1770. It worked on the same principle as a modern pedometer, and was designed to wind as the owner walked.

About IWC
While founded in Schaffhausen, Switzerland in 1868, the International Watch Company (IWC) was created by an American--Florentine Ariosto Jones. The Jones calibre, the very first movement manufactured by IWC contained a wealth of advanced technical features. These included an elongated index to regulate the balance hairspring and a bimetallic cut balance to compensate for fluctuations in temperature. In 2000, IWC introduced the 5000 calibre, a new automatic mechanical movement with a seven-day power reserve and the legendary winding mechanism of the patented Pellaton system.

In the aftermath of World War II, IWC became a company of international scope. Exports to the United States increased and the brand became best known for its specialty watches (now highly prized as collectibles), such as the Mark XI and Ingenieur--the first automatic IWC with a soft-iron inner case that protected the movement against magnetic fields.