TICK TOCK: Gucci will today launch a Web site dedicated to its fledgling watch business. Accessible via the gucci.com site or through the brand-new guccitimepieces.com platform, it is iPad ready. High-resolution images of watches are showcased against a backdrop of browns and golds, and the site also features Gucci’s history, a listing of in-store events and a global store locator. Gucci’s latest watch models are U-Play, which allows the wearer to change the combinations of colors and materials of the bezel and bracelet, and the G-Frame, a timeless and elongated style available in beige, antique rose and slate blue. Watches last year accounted for 4.6 percent of Gucci’s 2.2 billion euros sales, or $2.9 billion at current exchange rates.