Corum Admiral's Cup Men's Auto Leather Strap Watch

Men's chronograph timepiece boasts a stainless steel case and leather strap Corum Admiral's Cup men's watch features colorful flags around the bezel With reliable automatic movement, wristwatch is an elegant accessory for any occasion Deep black dial Luminous hour markers Three chronograph subdials Date display at 6 o'clock Officially certified chronometer Round stainless steel case Flags on bezel Sapphire crystal Screw-down crown Black canvas/leather strap Double folding clasp Swiss automatic movement Water resistant to 50 meters Case measures 43 mm in diameter x 14 mm thick Strap measures 20 mm wide x 9 inches long Made in Switzerland All measurements are approximate and may vary slightly from the listed dimensions. Men's watch bands can be sized to fit 7.5-inch to 8.5-inch wrists.This watch is powered by automatic movement which means the winding of the spring occurs automatically when the wearer moves his arm. However, it is recommended that you manually wind the watch at least once every two weeks. It is also important to adjust the time once a month as automatic movement can gain or lose a few minutes per month. This watch has a screw-down crown (knob) for setting the time. Screw-down crowns create a stronger seal against the case than a push-and-pull knob, giving the watch a greater water resistance factor. To unscrew the crown, grasp the knob and turn it counter-clockwise (towards you) a number of times until it releases. Then pull or push the crown into position to set the time, date, and other functions. To close the crown, press it against the case while turning in a clockwise direction.