Compact Roof Prism 10-30x50 Monocular: 10-30X power magnification and large field of view, specially designed for outdoor activities such as climbing, hiking, driving, watching wildlife and scenery. This power also can be used for watching large stage play, vocal concert, a football game, etc;High Contrast and Resolution Images: The optics technology, the HD monocular telescope equipped with BAK-4 prism and fully muti-coated lens, guarantee superior light transmission and brightness and the light transmittance reaches up to 99.5%. Our monocular has low-light-level , it could help you see things in low light (can't see anything in complete darkness), provide you a amazing viewing experience;Waterproof: The nitrogen filled IPX5 Nitrogen-Filled Waterproof, this monocular built-in lens dust cover can prevent lens from dust/moisture/debris to keep it clear all the time, and fog-resistant coating and O-ring sealed optics makes;Easy to Use: You can see scenery Easily and Rapidly by using our monocular telescope for Single Hand-Adjust the eye cup and Focus Wheel until see clear and bright image, the Smartphone Holder and extendable stable tripod would help you to get a HD IMAGE or VIDEO easily;Widely Compatible with Smartphone: Love to share what you see with friends and families? The smartphone holder perfect for almost all the smartphones on the market. Easy installing and easy sharing, a good candidate for your next trip