The Vortex Crossfire 10x42 are a pair of roof prism binoculars suitable for bird watchers, travelers, and hunters. Thanks to the 10x magnification, you can bring far-away subjects in close range. Animals at a range of 1,000 meters look like you're watching them from 107.9 meters. Do you prefer to observe nearby details? Focus on these details from a minimum distance of 2.4 meters. These binoculars have a twilight factor of 20.5. This means you can observe birds in the trees in the evening as well. Thanks to the rubber material, the Crossfire 10x42 won't slip from your hands when it's raining and the binoculars are protected from bumps.