UBoatTimepieces have been a major accessory category for men in recent years, and watch companies are continually upping the ante with new offerings. U-Boat—one of the hottest watchmakers around—has responded to the hype with its latest Classico. Featuring a black stainless-steel case with matte black dial and hypoallergenic black rubber strap, this dark beauty unscrews from the top. $2,400 and up Oster Jewelers, 251 Steele St., 303-572-1111, osterjewelers.com.