Leica Duovid represents a new generation of binoculars.
The models 8+12x42 and 10+15x50 are the first high-end binoculars with switchable magnification.
The models are covered with an ergonomic rubber coating. The 50 is especially fast and thus enables successful observing in twilight. The 42, on the other hand, is easier to hold and lighter, which is is important when you need to travel light.