[10 x 42mm HD Monocular Telescope] monocular telescope is a high-performance single-tube telescope, 10-42x adjustable magnification, allowing you to get closer to the distance. In addition, the 42 mm objective lens (eyepiece: 18 mm) of this monocular provides a larger field of view. Ideal spotting telescope for camping, bird watching, concerts, sports events, sightseeing, scenery, etc.[High-Resolution Image] Our zoom monocular BAK-4 prism and broadband multi-layer coating ensure a light transmittance of up to 99.9%, thereby obtaining bright, clear and colorful images. And by reducing glare and double vision, you will not feel dizzy and have a comfortable vision for a long time.[One-Handed Focus, Waterproof Design] Ergonomic design (14.5cm x 7.0cm x 5.5cm) can help you quickly and accurately focus on the target with one hand. The sturdy rubber casing and rubber handle make it easy to use and prevent it from slipping out of your hand. Nitrogen-filled waterproof material with anti-fog coating and O-ring sealed optical elements prevents moisture, dust and dirt.[Widely Compatible With Smart Phones] Our monocular telescope are equipped with the latest fast-aligning smart phone holders and aluminum telescope holders. It is very suitable for iPhone, Samsung GALAXY, LG, Sony and other smart phones on the market; it is also very easy to install and provide high-definition pictures easily.[Wide Application Scenarios] Vickey monocular telescope sees the distant scenery very clearly, so it is suitable for photo sharing enthusiasts. The telescope can be used to watch concerts, football matches, bird watching and various outdoor sports; it is also an excellent gift to family or friends gift