Seiko Prospex Compact Solar Scuba DiverThis practical compact diver’s watch with sapphire glass is conveniently solar-powered; the watch charges from both natural and electric light with no need for a battery replacement. Prospex is a combination of the words \'Professional\' and \'Specifications.\' These timepieces are designed to be practical, reliable and durable within extreme or everyday environments, for experts, sports lovers and adventure seekers alike. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.