The Prospex Speedtimer ‘Go Large’ Solar Chronograh is a solar-powered chronograph timepiece from the Prospex Speedtimer watch collection which represents Seiko’s professional timekeeping heritage. In the 1960s, Seiko announced itself on the international sports timing stage with a whole new generation of high-precision equipment. Adding to the popular ‘Speedtimer’ watch collection, this particular design features an increased ‘go large’ 41.4mm case size, featuring a tapered bracelet, aluminium bezel and tachymeter for increased practicality and visibility. Conveniently, this watch charges from both natural and electric light. This version features a stylish blue dial and bezel, with splash for vibrance.