Features: 1.100% brand new.2.Mirror body size is moderate, easy to carry.3.Field of View:305ft/1000yds | Minimum Focus Distance: 13.12ft / 4m | Eye Relief: 0.54in / 13.6mm4.Multi-coated optics & BK-7 prisms: Telescope uses multi-coated optical glass lens, the image does not cast distortion, is bright and clear5.This is a high cost of roof binoculars, mining for optical glass lenses and coated with multilayer coating, no color cast is not distorted image, the picture clear and sharp.6.Twist-up eyecups effectively eliminate stray light interference, to obtain a more pure imaging.7.Suitable for hunting, Bird Watching, Camping, Hiking, Backpacking, Traveling, Concerts, Sporting Events and Outdoor Adventures.8.Usage: First use the left eyepiece to emphasize the most clear, then mobilize the right eyepiece focusing ring to the right eyepiece clearest later use only the center focus. Specification: Brand SVBONY Item No SV40 Magnification 10x Objective Lens Diameter 42mm Focus System Center Eyecups Twist-up Prism Type BK-7, Roof Optical Coating MC-Green Eye Relief 13.6mm Exit Pupil Diameter 4mm Field Angle 5.8 Degrees Field of View @ 1000m 102m/1000 M Field of View @ 1000yds 305ft/1000yds Tripod Adaptable Yes Waterproof and Fogproof No Minimum Focus Distance 4m Color Black Weight 609g Dimensions 150x126x52mm