BURRIS THERMAL HANDHELD 400 X 300 RESBURRIS THERMAL HANDHELD 400 X 300 RES The Burris thermal handheld monocular is a rugged and user friendly device featuring a 400 300 VOx thermal sensor with a 50 Hz refresh rate and 12 m pixel pitch, paired with a high performance 35 mm F 1. 0 lens. It delivers clear thermal imagery at detection ranges of up to approximately 1,100 yards. The bright display presents the view in nine distinct color palettesincluding white hot, black hot, red hot, green