Brand Proflie: BORWOLF has been the industry leader in high-performance sports optics for more than 10 years. The companys guiding principle is to provide the highest quality, most reliable, and most affordable sports optics products and most excellent customer service on the market. Product description : BORWOLF Binoculars perfect for Bird Watching, Hunting, Camping, Travelling, Secenery and otheractivities. To see 10X-30X closer with a clear and bright image with 50mm objective diameter wide lens. Large Field of view (249FT /1000YDS ) . Easy focusing perfectfor Hiking,Hunting,Climbing,Bird watching, Watching Wildlife and Scenery. Large BAK-4 Prism and FMC Fully Multi-coated Lens Elements. Strengthen the keyfunction of a monocular, guarantee superior light transmission and brightness, whichmakes your view clearer and delivers crisp images. Its sealing property ensuresthe living waterproof , fogproof ,dust-proof functions. Rubber armor withstripes makes it comfortable for use, increase the friction, keeps it fromslipping out from your hand and its rubber finish has shock resistance. Specification: Product model:10-30X50 Magnification: 10x-30x. Eyepiece caliber: 20. Objective diameter: 50 Prism system/ material: porro / BAK4. Focus system: center adjustment. Field of view: 249FT/1000YDS. Exit pupil distance: 16-11.7mm. Coating: purple Size: 18.5x20x6cm. Eye cup type: fold. Package Includes: 1 x Binoculars 1 x Carrying Bag with belt 1 x neck strap 1x wiping cloth 1x color box 1x user manual