Solar Power
From top: Five-time-zone yellow-diamond and stainless-steel watch, $55,000, Jacob & Co.; stainless-steel, water-resistant watch, $225, Nautica; stainless-steel, water-resistant watch with rubber strap, $275, Swiss Army; stainless-steel chronograph with two counters, $8,800, Ferrari Engineered by Officine Panerai; stainless-steel, water-resistant watch, $150, Lacoste.
