Automatic Mechanical Men's Luxury Watch Swiss Date Month Sapphire Crystal Dial. Men's fully automatic mechanical watch, equipped with a week, month, date, month phase function, no need of batteries, rely on exercise to gain energy. What is auto self-wind mechanical movement?Automatic self-wind movement gain the energy from the movement of the wearers arm. So you dont need to manual winding the watch under the normal case. It may need to manual winding because of wearers physical activity energy insufficiency to operate the watch. Please take a control that turn the crown less than 20 laps. This is a great and useful gift. We are committed to providing the best products and services to our customers. We will try our best to make you satisfied. The item "Automatic Mechanical Men's Luxury Watch Swiss Date Month Sapphire Crystal Dial" is in sale since Friday, July 20, 2018. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Watches\Wristwatches". The seller is "residostyle" and is located in Hong Kong, HK. This item can be shipped worldwide.