Measuring only 1/4" (0.2590") thick, this is the world's thinnest calendar wristwatch. The watch face fits comfortably under mens' sleeves and gloves, and it weighs merely one ounce, so you'll hardly know you're wearing it. Made by Steinhausen of Germany, crafters of fine timepieces for 85 years, the watch is the product of five years of research and design by German engineers and Swiss watchmakers who collaborated to put intricate mechanical clock movement into the world's thinnest watch face. The movement is precision Swiss quartz for accurate, reliable timekeeping, displayed on an elegantly simple face with Roman numerals and a day-of-the-month display. Plated in 18k gold, the watch has a sapphire stone embedded into the crown and comes with two Italian leather bands (brown and black). Includes storage box.