【Professional binoculars】 10 magnification HD compact binoculars have a 1000m field of view with smartphone adapter, are ideal for bird watching, hiking, hunting, sightseeing, basketball, rugby, sports competitions and concerts.【HD binoculars】 The BAK4 prism and the multi-layered FMC lens coating strengthen the light transmission of compact binoculars. Compared to Bak-7, the Bak-4 prism has a better refractive index.【Precise Adjustment】 Quickly focus on the subject through the central focus ring and adjust the diopter ring for a clearer picture. Users with or without glasses can watch comfortably.【Waterproof Dustproof】 These binoculars are completely waterproof and fog-free. The lens cap supplied prevents dust and dirt from entering. The skid.