The large lenses offer quality views of the landscape with optimal light gathering performance. 10X60 Black Binoculars 231 FT. At 1000YDS Perrini Brand Ruby-coated lenses for maximum light transmission and optimum brightness Heavy-duty, 100% Quick adjustment for optimum eye relief Trim, ergonomic shape for easy, all-day use Textured, non-glare, non-slip rubber armor absorbs shock Dioptre adjustment for precise and reliable adjustments Wide apparent field of view (10X60). While realizing a wide field of view, it assures a sharp and clear view all the way to the lens periphery. Extra-low dispersion glass corrects chromatic aberration that causes color fringing and realizes a contrast-rich and high-resolution image High-quality multilayer coating is applied to all lenses and prisms while dielectric high-reflective multilayer coating is applied to the roof prisms, achieving a bright view of up to 92% or higher light transmittance, and natural color fidelity Phase-correction-coated roof prisms for high resolution and contrast Scratch-resistant coating is applied on the objective lens and eyepiece surfaces Long eye relief design ensures a clear field of view, even for eyeglass wearers Lead- and arsenic-free glass is used for all lenses and prisms Sturdy, lightweight magnesium alloy body Objective lens caps are integrated to prevent loss Sharp, clear images to the lens periphery, thanks to our exclusive field flattener lens and eyepiece design Carrying Strap/And Cleaning Cloth Instruction Manual Included Comes With Original Box Beautiful carrying Case IDEAL FOR Boating/Yachting Sports Bird Watching Travel