Laser tag. According to the information about Rolex watches, the green sticker on the back cover of Rolex watches is a laser label. Rolex is a famous Swiss watch manufacturer, formerly known as WilsdorfandDavis (W&; D) Company, jointly operated by HansWilsdof, a German, and AlfredDavis, an Englishman, in London on 1905. 1908 was registered by Hans Weisdorf in La Saud, Switzerland, and changed its name to Rolex. After a century of development, Rolex, headquartered in Geneva, has 65,438+09 branches and 24 large service centers in major cities around the world, with an annual output of 450,000 watches, which is one of the famous watches with a large market share.