The Slimline collection by Frederique Constant consists of a number of ultra-thin watches with quartz, automatic, and high-end in-house movements. Each of these watches is a classic in a contemporary sense because to its elegant shapes, timeless designs, and harmonious curves. At every level, thin and stylish.The Slimline collection by Frederique Constant consists of a number of ultra-thin watches with quartz, automatic, and high-end in-house movements. Each of these watches is a classic in a contemporary sense because to its elegant shapes, timeless designs, and harmonious curves. At every level, thin and stylish.