The Comparison of SV410 and SV46 (SV406 and SV406P has the same size of SV46) is as follows. Specifications Model F9363B Power 9x-27x Objective Diameter 56mm Objective lens focal length 189mm Objective Material Extra-Low Dispersion Glass Zoom eyepiece focal length 21mm~7mm Objective Lens structure 4-Elements / 3Groups Zoom Eyepiece Lens structure 6-Elements / 4Groups Type of Prism H-K9L Prism Type Roof Prism Waterproof IPX5 Prism Coating FMC Resolution (“) 3.8″ Exit Pupil (mm) 6.2mm-2.1mm Eye Relief (mm) 18mm Field of View at 1000m/1000yds 78m – 36m/234ft~108ft Near Focus Distance 2m Features Svbony SV410 is very small, only one palm size, so you can put it in your backpack, pockets, wherever you want, it’s very convenient Svbony 9-27x56mm has ED glass, which can provide exceptional clarity, decreases glare and ghosting effectively Comfortable 45° viewing angle allows you to watch both the sky and the earth Includes soft carrying case, lens cloth, and lens covers, which can protect your spotting scope and achieve a long-term use Suitable for birding, view target shooting and sporting event Video
