Sig Sauer SOEC42200: Echo MV35 640x512 Core 2-16x35mm Thermal Monocular Building on decades of expertise in developing rugged, cutting-edge optics, SIG SAUER introduces the ECHO MV35, a compact thermal monocular designed for uncompromising performance and fully backed by SIG SAUER’s Infinite Guarantee. The Sig Sauer Echo MV35 Thermal Monocular features a LWIR 640×512 VGA, 12µm 50Hz thermal sensor with Sig Sauer Echo MV35 Thermal Monocular, 640x512 Core, 2-16x35mm SOEC42200