Men's stylish business watch, automatic movement, tungsten tungsten crystal, sapphire crystal, 5 ATM water resistance, calendar function, luminous

?Automatic watch: A mechanical watch can be worn every day without any hassle. The transparent case back, hollow dial, and movement are visible, allowing you to enjoy the unique charm of an automatic watch. ?Simple Roman index display: Luminous paint is used, making it easy to see the time both day and night. ?Calendar function and 5 ATM water resistance: Water resistant for everyday use. You can check the year, month, day of the week, and date. ?High-quality materials: Tungsten steel band, corrosion-resistant and long-lasting. Sapphire crystal is highly abrasion-resistant and difficult to crack. ?Set contents: Main unit, box, instruction manual, spring bar remover