GUANQIN Men Calendar Energy Reserve Analog Automatic Self-winding Mechanical Business Wrist Watch with Stainless Steel or Leather Band Sapphire Crystal Mirror Waterproof Vintage Clock Man

1. Watch is with calendar, tell your day and date anytime, anywhere, moreover it's with Energy Reserve function, it is charming and shining. See-through back cover allows you to observe the work of the movement at any time, feel the passage of time intuitively, and enjoy a different visual experience. Elegant, fashionable and practical design suitable for business, casual or any other occasions, which is a great gift to loved ones for Christmas, birthday, Father's Day and Valentine's Day. 2. Stainless steel case, through long hours of glossy angled engraving, planning, design, precision machining and production processes made it stand wear and tear. With steel or genuine 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. Safety buckle is made of skin-friendly material, convenient to put on and take off from your wrist. 3. This watch is water resistant to 50M (164FT), with high hardness synthetic sapphire crystal glass mirror, precision workmanship and high quality parts, making it easy to handle even on rainy days and hand washing. The double-sided transparent synthetic sapphire watch mirror has a high hardness of 9 at the moth level, which is second only to diamond, and has high durability and is not easily scratched. An anti-reflective coating process is used to make the watch mirror smoother and clearer. 4. Using a high-precision automatic self-wind movement, this watch guarantees accuracy and stability. No matter where you are, it provides precise timekeeping, keeping you away from the embarrassment of missing important events. 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. 

5. We have strict quality control standards to ensure that every watch undergoes meticulous craftsmanship and rigorous testing. This watch possesses excellent durability, accompanying you for a long time. Do not use your watch at extremely hot or cold temperatures, which can damage your 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.