Citizen Mechanical Automatic Watch Mechanical Open Heart See-Through Back Waterproof Black NH9131-14E Men's Black

[Citizen Collection that pursues the basic performance and design of watches] A mechanical watch with a classically modern design. It has an open heart design that allows you to enjoy the delicate movement of the balance wheel, which is the heart of a mechanical watch, through the window at the 6 o'clock position on the dial. [Gorgeous pink gold hands and indexes placed on a black dial] A distinctive design with a dial pattern that radiates out from a circular window. The case back is a see-through back. You can enjoy the rotating weight part and the movement of the mechanism. [Mechanical self-winding watch] A mechanical self-winding watch powered by a mainspring. When you wear a watch on your wrist, the movement of your arm moves the rotating weight inside the watch, automatically winding the mainspring. *You can also check the operating instructions from the instruction manual on the manufacturer's website (model number: 8229). [Product Details] Mechanical wristwatch, automatic + manual winding, -20 to +40 seconds/day, approximately 42 hours (maximum winding), crystal glass, case: stainless steel, band: calf, water resistant to 5 ATM

Brand CITIZEN Model number NH9131-14E Model number NH9131-14E Case shape Round Windshield material Crystal glass Display type Analog Clasp Buckle Case material Stainless steel Case diameter/width 40 millimeters Case thickness 10.7 millimeters Band material/type Leather Band size Standard for men Band width 19 millimeters Band color Black Dial color Black Bezel material Stainless steel Bezel function None Calendar function No calendar Other functions Open heart Movement Automatic winding made in Japan