Ladies Frederique Constant gold plated Slimline watch with a round silver tone dial with roman numerals and a second hand sub dial on a brown leather strap. This watch is powered by a Swiss quartz movement and has a sapphire crystal glass. Case 28.6mm. he Frederique Constant Slimline Range consists of some of the evergreens in our collection. These timepieces include latest technology, while maintaining their same successful, stylish and clean designs. The Frederique Constant Slimline: a tribute to fine Geneva Watchmaking, uniting style, elegance and high quality at sensible prices.