1、High-definition multi-layer green film, can prevent light rain or water splash, can not be used underwater, low light night vision, weak light source around the observed object is visible, the stronger the light, the clearer you can see 2、16x52 high power magnification, single eye 16 times magnification and 52mm objective lens diameter, provide bright and true images. The telescope has a wide field of view and enjoys the best view during outdoor adventures 3、High-contrast and high-resolution images, the latest optical technology, equipped with BAK-7 prism and full multilayer coating lens, can ensure outstanding light transmittance and brightness, light transmittance up to 99.5% 4、Double focus function, using the double focus function of the focus ring (the front and rear adjustable zoom), easy to focus, for accurate observation to obtain a clear image. Provide you with an amazing viewing experience 5、Non-slip grip, and long-lasting external protection from the hand, with anti-fog coating and O-ring sealed optical elements to prevent moisture, dust and debris from covering the lens, keeping the telescope clean at all times Item Type: Bifocal Optical Telescope Product Length: Approx 15cm/5.9in Product Weight: Approx 253g/8.9oz Mirror Body: plastic frame + environmentally friendly rubber Magnification: 16 times Objective lens outer diameter 52mm, inner diameter 40mm, eyepiece outer diameter 40mm, inner diameter 18mm Prism: BAK7 Focusing: central focusing + front end fine-tuning 1 x Telescope 1 x Cloth bag 1 x Lanyard 1 x Lens cleaning cloth 1 x Manual