Dimensions：Diameter: 20mm / 0.78inch; Height: 19mm / 0.74inch. Material：alloy,crystal glass Weight： 15g Selected high-quality materials, durable and not easy to damage Classic style with personalization Perfect gift idea：You can give it as a gift to anyone you love Notes: 1.There may be some size error due to different measurement methods. 2.Because the display screen and light are different, there may be some color difference.