The Citizen NH9131-73A Semi-Skeletonized 8229 Automatic Watch is a masterpiece of horology that combines elegance and technical sophistication in a stunning design. This men’s watch features a 40 mm wide and 11 mm thick case made of high-quality stainless steel, polished and brushed to create a unique, sophisticated look. The classic silver color of the watch case underscores its timeless character.