Gute Casual Mens Black Steel Skeleton Automatic Mechanical Coated Glass Wristwatch High quality steampunk steel mens automatic watches Through the keleton dial ,you can see the gold gear mechanisms moving in the watch , the self-winding system is mesmerizing Wind the mechanical watch and it would keep working,don't worry about the battery is dead Water Resistance: 1ATM water-proof for daily use such as sweating / hand wash/rain day, no suitable for swimming / diving / water-related Warranty: GuTe offer our customers a 12-month 100% Money Back Guarantee. If your wristwatch has any quality issues, please contact our customer service immediately. We will definitely help you solve it You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it! This watch is an automatic watch equipped with a manual winding mechanism. This watches is charming for business appointment, activities or your daily wear, is a wonderful gift set in each festival for your parents, husband or friends. Easily spice up a normal outfit and add style and attitude into life. not just a watch! Case Diameter: 4.5 cm Case Thickness: 1.3 cm Band Width: 2 cm Movement: Automatic movement Band Materials: Stainless steel Style: Classic skeleton watches<br> Manual - Slowly turn the crown clockwise (in the 12 oclock direction) to wind the mainspring ( please manually wind the mainspring for your first use or when it stop work ) Automatic - wear on your wrist and keep the watch move to wind the mainspring Pull out the crown to the first click to set time counter clockwise ( in the 6 oclock direction ) Please keep the watch away from magnet