[Famous Swiss Watch] Ultra-thin manual movement - Vacheron Constantin VC B33 Heritage Series 81180/00R Historical Masterpiece Series Men's Mechanical Manual Winding Watch Famous Swiss Watch Back Transparent Cal.1400 AS Movement Geneva Observatory Tested and Shipped (Same Function as the Genuine Product) It is a manual mechanical movement) with an ultra-thin case and strap design, which is very comfortable to wear! 904 stainless steel gives you a perfect texture experience. Sapphire scratch-resistant glass has a diameter of 40mm and a thickness of 7.7mm! Warm reminder (for purely manual movements, you need to keep the winding at about 25 revolutions every day to maintain normal running time!) The famous craftsman Swiss Watch recommends men’s mechanical watches.