Watch makers took the magnifier lens and placed it upside replica watches uk down on the bottom of the crystal, as opposed to on the top. By reversing the lens, to magnify in this new direction, the same effect is replica watches uk achieved without the bump on top of the crystal. You can see this feature on some of the more expensive watches. A few notable ones are the Zenith Defy series, the Louis Vuitton Tambour line, and the Chopard Mille Miglia line of replica watches models. This upside down magnifier lens feature is not limited to these models, and should be found on a number of newer watches. As time goes on, these new types of lenses are sure to appear on less expensive models. To achieve this upside down lens effect, there must be replica watches uk enough clearance between the face of the watch, and the crystal. With the trend in watches being larger in size, this is often not an issue, and the upside down lens is actually a bit smaller than would be needed on top of replica watches uk the crystal.