The Runwell Sport Chrono 48MM was obsessively engineered with premium sport features including a unidirectional turning and removable black leather strap. The 48mm is their largest watch and the only series with a big date window and ability to measure tenths of a second. The durable gold-plated case does more than add a little action to your day, it encourages it. This a watch that can measure elapsed time while continuing to display conventional time, often using independent sub dials operated by start, stop and reset push-pieces. Accented with three sub dials and a dual calendar aperture to help you keep track of the date, this black dial with a matte velvet finish and gold-toned details is all about function.