Baigish Monocular Zoom Telescope 8-24X40 HD Powerful Metal Optical Lens Astronom
Prism (BAK4 / BK7). Prism Type (Roof / Porro). Lens Coatings FBC. durable using. SIZE:31.5CM Extension to 45.5CM. There are NO EXCEPTIONS! Net weight(g) 410. Twilight number 20.