Prospex Alpinist GMT SPB377 yellow framed by a rotating GMT

framed by a rotating GMT bezel

and maintaining the power reserve better during chronograph operation

I color and SI1 clarity

230 Components

Prospex Alpinist GMT SPB377 yellow framed by a rotating GMTProspex Alpinist Mechanical GMT. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Part of a rich legacy of innovation in high intensity timekeeping, Prospex continues to celebrate a long history of sports watch excellence with re creations and re interpretations of landmark achievements. Inspired by Seikos first sports watch, the 1959 Alpinist, this