GUANQIN Women Men Couple Calendar Week Rhinestone Vintage Japanese Automatic Self-Winding Mechanical Wrist Watch Tungsten Steel Sapphire Crystal Waterproof Luminous Clock

This GUANQIN wristwatch features a Japanese automatic self-winding movement with 21 synthetic gemstone bearings for precise timekeeping and long-term kinetic energy reserve. The watch winds automatically through wrist movement, transferring energy to the mainspring. It includes a calendar display showing day and date, plus week and luminous functions. The see-through back cover allows observation of the movement. The case is made of tungsten steel with glossy angled engraving for durability. The band is also tungsten steel with an ergonomic design for comfort, secured by a safety double-open butterfly buckle made of skin-friendly material. The synthetic sapphire crystal mirror is highly scratch-resistant and corrosion-proof. Water-resistant to 50 meters, suitable for hand washing and rain exposure but not for swimming, diving, or hot baths. Intended for business, casual, sport, and other occasions. Package includes the watch. Color: silver black women. Gender: Female. Note: Carefully check the size guide in the product images for proper fit.