It will need a good clear adhesive for mounting. For magnifying the date window on the watch dial. UV glue will need to be cured with a UV light. in small custom size bottles.
Sapphire Glass Date Window Bubble Cyclops Magnifier for Watch Dial Crystal
Round Sapphire Glass Date Window Bubble Cyclops Magnifier Watch Crystal 5.5mm
1.2mm Sapphire Glass 29 to 32mm Replacement Watch Crystal Round Lens Date Window
3.5mm 5.5mm Watch Crystal Magnifying Date Calendar Window Mineral Sapphire Glass
Sapphire Glass Watch Crystal 1.2mm Flat Round Watch Lens 18mm-42mm Mineral Glass
1.0mm Double Dome Watch Sapphire Glass Replacement Watch Crystal Lens 18mm-40mm
