Cartier Women's W31075M7 Pasha C Stainless Steel Automatic Watch

Blending a touch of timepiece history with a smoothly modern style, this Cartier Pasha stainless steel women's automatic watch offers a contemporary European complement that will never go out of style. Originally designed for the Pasha of Marrakech in the 1930s to enable him to safely swim while still wearing a watch, Cartier's Pasha was one of the earliest water-resistant wristwatch designs. This model, with a water resistance of 330 feet, or 100 meters, is suitable for swimming and snorkeling. The round watch case--which measures 35mm wide (1.4 inches)--is topped by a flattened, highly polished bezel, and it's accented by a distinctive domed, screw-down crown. The rose pink dial features an interior square of small minute indexes, which is surrounded by thin stick markers, stylized Arabic numerals at the quarter hours (supplemented by dotted luminous marks), black-outlined luminous dauphine hands (with luminous-tipped seconds hand), and a date window between 4 and 5 o'clock. It's completed by a modular link stainless steel bracelet band with a polished finish to match the bezel.

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.