The best compact foldable binoculars for an HD view of nature are you a birdwatcher or a Traveler? Do you love ornithology and wildlife? The arena f+ is the ideal binoculars for beginners (kids and adults) in nature observation and bird watching, who are looking for a brand model with comprehensive features. Take it with you on your travel and expeditions, it is easy to handle. Waterproofness (nitrogen Fill sealed), silvered prisms, closer near point, larger field of view and with the usual compact, robust and yet handy design. Bak-4 professional high performance prisms with multi-layer coating provide Sharp and true-to-life images. Its additional silvering ensures a reflation improved by 4% and thus a higher light efficiency. Moreover, harmful UV radiation is deflected to a higher degree. The belt case and carrying cord offer even more value to this great pair of binoculars. Technical features Magnification: 8Xlens Ø (mm): 25Exit pupil (mm): 3, 1Geometric light intensity: 9, 8Twilight factor: 14, 1Eye relief min. /max. (Mm): 2/6Pupillary distance min. /max. (Mm): 40/74near point (m): 6Field of view m/ 1, 000 m: 124Height x Width x Depth (mm): 104 x 113 x 43Weight without bag (g): 300Nitrogen filled: Yes Waterproof: Yes Eyepieces for spectacle wearers: Yes Prisms: bak-4coating: full multi-coating: 5 years What's in the box arena f+ 8x25 binoculars; belt case; carry cord