DATE & DAY(IN NUMBERS, 17, HALF DAY INCREMENT) INDICATORS. SUN / MOON PHASE AND ALL DIALS / BUTTONS ARE FUNCTIONAL. Automatic mechanical watch's momentum comes from the wearer's movement.So wear under normal circumstances. Don't need hand winding. Only when the wearer couldn't provide enough momentum. The item "Mens Automatic Mechanical Watch Silver White Dial Stainless Steel 3109B" is in sale since Thursday, November 21, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Watches\Wristwatches". The seller is "loungelux" and is located in guangzhou. This item can be shipped worldwide.