AMPM24 Automatic Sun/Moon 24 Hours Mechanical Men's Black Leather Wrist Watch PMW387 Sold by AMPM24 Store. Package includes: 1 x Mechanical watch and 1 x AMPM24 Gift Box Specification (Approx): - Diameter: 4.3cm (1.7") - Thickness: 1.6cm (0.6") - Length of watch band: 20.0cm (7.9") Movement: Self-winding Mechanical, please wind up the watch before every usage. Please keep the watch away from magnet to avoid making the watch stop working. Color may not appear as exactly as in real life due to variations between the computer monitors and nacked eye color difference. For detail instructions of the watch, please access our website to download. The website address will show on the manual in your package. If any questions, please don't hesitate to contact us.