Seiko Prospex Alpinist Watch SPB121 factory_images Bio-based resin in a mix

Bio-based resin in a mix of black and grey for the bezel and band helps reduce environmental impact while creating a unique pattern that evokes vigorous

The freelancer GMT Worldtimer comes supplied on a colour-coordinated calf leather strap with tone-on-tone stitching and a folding clasp

With speed and heart rate tracked on the bezel

while the screwdown see-through caseback provides a view of the caliber 6R64 29-jewel automatic movement with manual winding capability

Seiko Prospex Alpinist Watch SPB121 factory_images Bio-based resin in a mixFrom the Prospex Collection. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line follows every challenge with technological excellence and style. A modern re imagining of Seiko's first sport watch, introduced in 1959, this distinctive timepiece is an upgrade of a highly successful Spring 2019 limited edition. Equipped with a rotating inner compass bezel for outdoor adventure, this unique design features a sunray finish