Features and specifications:br/ Lens: optical glass, high index prismbr/ High-definition Multi Green coating lensesbr/ Magnification: 6Xbr/ Field of View: 66 m, 8000 mbr/ Object lens diameter: 40 mm (1.57")br/ Eye lens diameter: 18 mm (0.71")br/ Dimensions: 6 x 2.1 x 1.65 inbr/ br/ Key features:br/ Dual focusing adjustment (Adjustable front and back zoom)br/ 40 mm objective diameter Wide-angle and viewbr/ Green-coated optics s ior light transmission and brightness, helping you see any target, such as birds or trying to get a better view of the stage.br/ Waterproof Fogproof & Slip-on design : Waterproof,dust-proof and shockproof degin, Used for any weather or climate. And The rubber armor with stripes es it comfortable for use and keeps it from slipping out from your hand and give you a good handfeeling.br/ Tripod and Cellphone Adapter: Anti-slip adapter can hold phone precisely and firmly over the eyepiece for photograph and video. Standard tripod resists shake and take a stunning view .br/ Wide ApplicationUsed for camping, fishing, hiking, f, scope, sporting events, concerts, bird watching and travelling etc.Outderto is dedicated to addressing any product & service issues.br/ br/ How to use:br/ Adjustable focus length allows you to rotate object or ocular lens aording to your needbr/ Warning: Do not look at the sun directly, otherwise it will hurt your eyes.