Casio AUTOMATIC EFK100D-7A Crafted for true sports car enthusiasts and GT car fans — the EFK100D, a sleek three-hand analog watch, embodies the EDIFICE spirit of synergy between timepiece engineering and the world of high-performance cars. The mechanical movement with 40-hour reserve powers the watch hands like a humming sports car engine, all housed in a compact 39mm case. The see-through case back reveals the movement in motion, reinforcing the unique charms of a mechanical watch. 43.5 × 39 × 12.5 mm Sapphire Crystal See-through screw lock back Power reserve: Approximately 40 hours Mean daily rate: -35 to +45 seconds Stainless Steel Band Solid Band One-touch 3-fold Clasp 100-meter water resistance Winding mechanism: Automatic with manual winding