Wearable technology is nothing new. Before Google Glass there was the not-so-humble wristwatch, invented in 1868 by Patek Philippe for a Hungarian countess (these days the company creates $50,000 versions), and popularized during World War I. Now, about a century later, watches still are about combining form, function and fashion, whether it’s a chic new metallic hues, larger sizes or pops of color. Here’s what’s trending in timepieces.