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. Prospex timepieces are practical, reliable and durable within extreme or everyday environments, for sports lovers and adventure seekers alike.