Recommended Feature: ** 10X-30X magnification. (You can adjust to what you like) ** Lens Diameter: 25 mm(0.98 inch) ** Minimum Focal Distance: 0.5M(1.97 inch). ** The prism: K9. ** Weight:0.37 pounds(0.17kg). ** Angular Field of View: 3.5 degrees(10X), 2.0 degrees(30X). ** High-index prisms for a bright, crisp image. ** Compact and lightweight for portability. Description: This zoom monocular telescope is a domestic Taiwan-funded enterprises exported products, the workmanship is very fine, excellent optical performance. Compact zoom ability is quite good, especially minimum focal distance can reach 0.5M, living in the current forefront of similar products. New broadband green film version of the eyepiece lens are multi-layer broadband coating, higher brightness. There are two colors for choosing: Black, Silver.It is perfect for travel, contest, concert!! Convenient for taking with you. Let your trip more wonderful!! Product advantages: 1,An ultra short near focus. Seven times the telescope near the focal length is about 5m, 5m or less can not imaging. This section near the focal length of up to 0.5m, not only impressive, "far", close view of Show is also quite an advantage. 2, small and Ling Long. Whole volume is about 12x3x3cm, net weight 120g, very convenient to carry. 3, dual-focus design, the use of more handy. General ordinary zoom telescope to rotate or stretch focusing, there are two focusing way possible applications, wider.