Features: Handheld monocular with 10x - 30x variable magnification allows you to see beautiful things 10-30x closer, clearer and brighter through 50mm large objective lens. Fully multi-coated lens and BaK4 prism guarantee superior light transmission and stunning sharper images. Large smooth focus knob makes it easy and rapid to sharpen your view on the fast moving objects. Adjustable eye cup twists up or down for quick adjustment and comfortable viewing with or without eye glasses. Durable rubber armor provides a secure, nonslip grip and external protection against shocks. Measures 7.5 inch long and weighs about 17 ounces, easy to use with a single hand, suitable for outdoor bird watching, animal observation,sightseeing, traveling, concerts, sporting events and more.