1. 50mm objective diameter Wide-angle and HD view.
2. Green-coated optics guarantees superior light transmission and brightness, helping you see any target, such as birds or trying to get a better view of the stage. 3. Waterproof,dust-proof and shockproof degin, perfect for any weather or climate. And The rubber armor with stripes makes it comfortable for use and 4. 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. 5. Ideal for camping, fishing, hiking, golf, scope, sporting events, concerts, bird watching and travelling etc.