SUMMARY: The DS4 Meridian is a historically-inspired 20ATM dive watch, that stands out in the Vaer line-up thanks to its perpetual solar-power movement and accessible sub-$500 price point. As a D4 model, this watch is the solar-powered version of our popular 20ATM professional-grade diver. In our opinion, the solar movement provides the best of both worlds - perpetual timekeeping with incredible accuracy. Six hours of sunlight will provide six months of power reserve, and the watch can run off any light source (even candlelight). WHO IS THIS WATCH FOR? We recommend the DS4 for those seeking a dependable ocean-oriented tool watch that can also be dressed up for more formal occasions. The perpetual timekeeping function of a solar-powered quartz watch makes it the perfect fit for an everyday wearer, and the choice of 38mm and 42mm case sizing provides an option for most men's wrists while also maintaining our commitment to ergonomic, and timeless proportions. INSPIRATION: In designing the DS4 Meridian our goal was to pay homage to the history of military dive watches while also further establishing a distinct and modern Vaer aesthetic. This watch's dial design and bezel are inspired by Rolex and Doxa military divers from the 1970s - and the case is inspired by the military issue Omega Seamaster. The DS4 Meridian Solar is further distinguished as one of the first Vaer field watches powered by ambient light - a premium feature that optimizes its use in remote settings and helps deliver on the promise of near-perpetual timekeeping.