Sig Sauer Echo MV35, Thermal Monocular, 2-16X Magnification, 35mm Objective, 640x512 Core Resolution, Flat Dark Earth SOEC42200 Equipped with BDX 2.0 and 10 hour runtime, the ECHO MV35 Thermal Monocular adapts to your situation at any given moment, with all the knowledge you need right in the palm of your hand. The ECHO MV35 measures only 7 inches in size and features a 640x512 resolution.