Each of these stores stocks a wide range of watches, but the three-level 57th Street TimeMachine, a high-tech merchandising extravaganza, steals the scene. A museum downstairs has timepiece exhibits, both temporary and permanent. The shops carry more than 70 brands, from status symbols such as Patek Philippe, Cartier, and Rolex, to more casual styles by Swatch, Seiko, and Swiss Army. Subway: 6 to 51st St./Lexington Ave.; E, V to Lexington-3rd Aves./53rd St. Other locations: 12 E. 57th St., between 5th and Madison Aves., PHONE: 212/758-7300. 200 W. 34th St., at 7th Ave., Midtown West, PHONE: 212/563-6880; Subway: A, C, E, 1, 2, 3 to 34th St./Penn Station. 10 Columbus Circle, at W. 59th St., Midtown West, PHONE: 212/823-9425; Subway: 1, 9, A, C, B, D to Columbus Circle.