Citizen Promaster Mechanical Watch, 20 ATM Water Resistant, SKY Series, Black, NB6046-59E, Men's, Silver

[Citizen PROMASTER: A genuine sports watch that combines functionality, durability, and safety] This watch features a high-spec mechanical movement with a GMT function. Its classic design features a 24-hour display on the bezel, and the hour hand moves automatically when you turn the crown, making it a truly authentic mechanical watch. [A classic design with a 24-hour display on the bezel] The case, featuring extensive hairline detailing, and the band, featuring a mirror finish on parts, create a gorgeous finish. The lugs connecting the case and band are inspired by the aerofoils of airplanes that glide lightly through the sky. The case back is engraved with an aviation helmet, symbolizing the tools a pilot would wear with confidence. [A Serious Pilot's Watch] The watch features bold, powerful hour, minute, and 24-hour hands for excellent visibility, an index design inspired by the SKY series, and a uniquely rounded bezel. The well-balanced combination of these components highlights the GMT function. A screw-lock crown at the 3 o'clock position enhances durability. The rotating faceplate ring also features an aviation slide rule function, perfect for use in the unlikely event of instrument trouble. [Mechanical self-winding watch] This is a mechanical self-winding watch that uses a mainspring as its driving force. When you wear the watch on your wrist, the movement of your arm moves the rotating weight inside the watch, automatically winding the mainspring. You can also wind the mainspring by hand. (You can also find instructions on how to do this in the instruction manual on the manufacturer's website.) [Product Details] Mechanical watch, automatic and manual winding, -10 to +20 seconds per day, approximately 50 hours (when wound), sapphire crystal (anti-reflective coating), case and band: stainless steel, water resistant to 20 bar, two types of magnetic resistance, luminous hands and indexes, aviation slide rule, screw-down crown