The minimalist masters over German-based Junghans offer its popular max bill watch in a variety of iterations, including hand-wound, automatic, quartz-powered, and now, solar-powered. Thanks to its titanium construction, the elegant timepiece is equal parts lightweight and durable, which isn’t to mention its conspicuous comfort. Slim and dressy by design, this solar watch is also quite advanced, with a perpetual calendar, seamless time zone adjustment, and app compatibility.