GUANQIN Men Rhinestone Calendar Week Multifunctional Vintage Wristwatch Analog Automatic Self-Winding Mechanical Stylish Wrist Watch Steel or Leather Band Sapphire Waterproof Luminous Business Clock (silver grey black) - GJ16315

• Using automatic self-wind movement, accurate, stable and durable. Relying on the movement of the wrist to generate electricity, you wear it on your wrist, it will continue to wind automatically, because the rotor is connected to the manual parts, the rotor rotates with every movement of the wrist, transferring energy to the mainspring, if you wear it for less than 8-10 hours a day, your Manual winding is required. Please rotate the crown about 30-40 laps when using the watch for the first time. The watch is with calendar, week and luminous function. See-through back cover allowing you to see the movement directly at any time, feel the passage of time intuitively, and enjoy a different visual experience. This watch showcases a fashionable and elegant style with carefully selected materials and intricate design. Whether it's for business or casual occasions, it perfectly complements your attire, ensuring you always maintain a stunning appearance. It is a great gift choice for holidays. Stainless steel case, through long hours of glossy angled engraving, planning, design, precision machining and production processes made it more durable. With steel or leather band and ergonomic design, the watch is incredibly comfortable to wear. Whether you are working for long hours or engaging in outdoor activity, it fits snugly on your wrist, providing you with the utmost comfort. Double-open butterfly buckle is made of durable and skin-friendly material, convenient to put on and take off. Synthetic sapphire crystal mirror, the hardness is the second after the diamond, not afraid of syringes and breaking, high temperature resistance and super corrosion protection, making your watch more durable and resistant to scratches and refraction. 50M waterproof, perfect for all types of business, casual, indoor, outdoor activities or daily use. In daily life, you can wear it to wash your hands and get in the rain, but please do not wear your watch when swimming, diving or taking a hot bath. GUANQIN watch has undergone a thorough inspection of water resistance, accuracy, functionality, and condition to determine the level of conditioning required to meet our strict standards. Do not use your watch at extremely hot or cold temperatures, which can damage the watch and shorten its lifespan. Keep your watch away from magnets as it can damage the movement. Please note that the display may be different and there may be color shifts. If you have any questions, welcome to send emails to us.