Specification: Name: 80x100 magnification portable monocular Colour: Black / Green Material: plastic shell Type: Monocular Magnification: 80x Prism Type: BAK4 Prism System: Roof Prism Focusing system: eyepiece focusing Field of view: 258FT/1000YDS(3500m/20000m) Lens diameter: 23mm Objective lens diameter: 42mm Supported Phone Width: 5.8-8.5cm(adapter required) Feature: * Monoculars with 80*100 magnification, Selected from BAK4 prism and multi-layer coated lens,Five-layer broadband coating * Large eyepieces ensures normal operation in low light and night condition. * Come with a phone adapter, that enables you to take photosvideos to record the shocking moments. * 22 mm HD large eyepiece, the larger the aperture, the much light it enters, the clearer the small image, the more saturated the hue, and the greater the degree of reduction, the more details can be seen. *Environmentally friendly rubber sheath, sturdy metal steel frame structure * Ideal for travel, vacation, hiking, camping, sports, enjoy beautiful nature, view birds, watch species, general purpose, and more outdoor activities. *Waterproof and moisture-proof design, suitable for all kinds of environments