Sales of high-end watches, like other luxury products, have taken a hit over the past six months. Worldwide sales at the Swiss jewelry companyRichemont fell 12% in the fourth quarter. They dropped 24% in the U.S. alone. The company owns watch brands Cartier, Jaeger-LeCoultre and Piaget. Altagamma, a trade association of Italian luxury goods makers, says sales of high-end products could sink 15% this year in the U.S. Watchmakers are responding to weak sales by cutting labor costs and reducing the number of pieces they make. They're also introducing timepieces that target active men looking for function more than fashion. Here are four: Seve Ballesteros Golf Watch: Swiss watchmaker Jaermann & Stübi has joined with legendary Spanish golfer Seve Ballesteros to create a limited-edition watch that's made from the clubs he used to win the 1991 Chunichi Crows Open in Japan. The watch starts at $19,000 and features a unique counting mechanism that golfers can use to track the number of strokes they make at each hole. It also keeps track of the total strokes per game, displays the holes played and compares the score to the golfer's handicap. Aquatimer Deep Two: This new timepiece from Richemont's IWC brand is a true diver's watch. A field on the left side of the dial displays the diver's depth using a blue indicator and the maximum depth of the dive using a red indicator. It also has a 60-minute scale on the outer bezel, so divers can keep track of their time underwater. A coating of Super-LumiNova luminous pigment on the bezel ensures easy readability in low light. The watch, which starts at $15,000, is water-resistant up to 394 feet.