For hiking, trekking, summer cabin use and the first steps of your bird observation hobby, these 10-fold binoculars are a very cost-effective choice. They work with eye glasses as well, thanks to adjustable eye cups. Their waterproof structure is more practical than you might think, as it means they are also dustproof and have a gas filling that seriously reduces fogging problems. The apparent view of field which essentially tells how "big" the picture is good for the price group. This makes it easier to get the subject in the picture, as you don't need to peek through a keyhole, so to say. - Magnification: 10x - Size of exit lens: 34 mm - Eye relief: 16 mm - Roof prism structure - FMC Phase Coating - BaK4 glass - Twilight factor 18 - Dioptric adjustment +/-4 - Exit pupil: 3.4 - Field of vision: 6° - Apparent field of vision: 60° - Field of view at 1000 meters: 106 meters - Tripod thread - 10 year guarantee - Closest focus: 4 m