Unique Skeleton Design with Luminous Hands?? Dual Time Display with Sun&Moon Phase</br>2 Different Styles Optional (Alloy case& Steel case)?? 3 Different Colors Optional -- Search W60025G</br>Automatic Self-Winding Mechanical Movement with Genuine Leather Starps</br>Simple Design with Elegant Look?? Retro Style</b"placing within 30 Days?? 1 Year Warranty</br></br>Product Description</br></br><b> Notes: </b> <br> <br> This is a mechanical watch which has special power. It is normal for a mechanical watch to have 45 seconds gap a day.<br> <br> 1. When you are first to wear it?? the watch must be wound by hand and wave your hand a few times?? then the watch will work fine. <br> <br> 2. After fully wound?? a common mechanical watch can run for 40 hours; a high-end watch can run for 3-4 days. <br> <br> 3. Theoretically?? how long a watch can run when fully wound will vary slightly due to different caliber design?? but?? generally?? power originating from daily wearing is not enough to keep a watch fully wo