Seiko Couture Radio Sync Solar Chronograph. This bold men's watch is designed with a two-tone stainless steel case and bracelet and a cabochon crown. The bold black dial features lumibrite hands and markers, a date calendar and three sub dials with gold highlights. The grey bezel includes a world time function featuring 25 time zones. Radio-controlled, Radio Sync Solar Chronograph automatically receives radio signals to precisely adjust the time and calendar signal reception and result indicator. The chronograph measures up to 60 minutes in 1/5 second increments with a split time measurement function and a date calendar. Powered by any light energy, its Solar Cell is energy-efficient with a 6-month power reserve once fully charged. No battery change is required.