This Swarovski SLC binocular features a fluoride coating for incredibly high light transmission. These binoculars have a long eye relief that is perfect for those users with eyeglasses and when used for hunting and birding they are light for their size and with a large field of view. These Swarovski SLC binoculars have been the staple in the Swarovski line for many years. The ergonomics are great and they have a thumb depression that allows solid hand control. Swarovski is now supplying these binoculars with the Snap Shot Adapter for quick digiscoping.