OPENING Swiss watchmaker Audemars Piguet is opening a boutique in East Hampton, N.Y. Day-to-day operations will be overseen by New York City retailer Material Good. (Above) Millenary Hand-Wound with 0.6 ct. t.w. diamonds in 18k white gold case and bracelet; $47,000; Audemars Piguet; 212-758-8400;