GV2 Swiss Automatic Calculator watch, This big, bold 47mm three-hand configuration features a dramatic multi-scale dial with two rotating bezels that facilitate a variety of calculations that would be next to impossible with a conventional timepiece. A Unidirectional outer bezel is marked with both 24-hour and 60-minute scales. Additionally, there is an inner rotating chapter ring marked with a 60-second scale and controlled by a second setting crown at 7 o’clock. The rotating rings can be operated separately or together for a variety of results.