This Junkers Horizon model features a freely adjustable second time zone (or 24-hour GMT hand) in addition to the standard 12-hour hand. White SuperLuminova is used to treat the hands and indices and a Swiss Ronda 505.24H quartz controlled movement is used for highly accurate time keeping. Comes in a 42mm stainless steel case. Both the two tone dial and case are modeled after instruments used in Vintage airplanes. Fast shipping and good product. Just wish there were instructions to change the second time zone. Although it was not too hard to figure out. When adjusting the second time zone the minute hand on the watch will also change by about a minute or so, not too big of a deal. Just adjust second time zone before adjusting time. For the second time zone to be exact I would suggest to adjust at the top of the hour.