Durable Stainless Steel Strap:Luxurious diamond design ,Classic skeleton dial, Roman numeral dial, give you exceptional artistic beauty.This skeleton watch with a transparent lower cover, you can see the movement of the watch movement. Mechanical: Operate without battery, it can keep working serval hours after winding it up. (Note:Since hand-winding mechanical watches all rely on manual winding to operate,it can only last for a few hours after winding it up. we recommend that you check the time frequently and wind it(15-20 times) to avoid not running or inaccurate time). Classic luxury design: Full stainless steel strap is perfect for everyday wear. Each watch comes with a strap adjustment tool that is easy to adjust to fit your size. Exquisite Gifts: Luxurious appearance and great packaging,suitable for all style,the best choice gift for holiday, Thanksgiving, Christmas gifts, graduation, Fathers Day, birthday. After sales service: If you have any questions about the product, please feel free to contact seller,we will give you a satisfactory solution.