BAK4 HD Image PrismThe latest optical technology, Good-definition monocular telescope with BAK4 prism, with a perfect circular exit pupil, can provide good-Quality images, and the light transmittance is as Good- as 99.5%. We provide tripods and phone mounts for free to help you take clear photos and videos of distant objects and scenery. Our monocular telescope features a good-quality smartphone stand and a sturdy tripod that can be adjusted to two different angles and 3 lengths as needed. You can adjust the blindfold and focus wheel with one hand with 10-30x42 zoom monocular telescope until you see a clear and bright image, and the smartphone stand and expandable stable tripod will help you easily get HD images or videos. Amazingly Sharp View] Dual focus and Good- light transmission design, the focus spectrum can bring you clearer, Good-contrast images. The eyepiece can be rotated to obtain depth of focus, then the focus setting and zoom setting can be adjusted until the view becomes clear. Perfect gift and gadget for birding,hunting,hiking,camping,traveling,sightseeing lovers.