The Burris BTH provides premium thermographic imaging in a modern lightweight design. It features a highly responsive zoom and can track heat signatures over 750 yards away. The BTH is wifi compatible and can stream videos and images directly to your smartphone. Features5 color palettesStadiametric ranging Hot trackManual and auto NUCAdjustable contrastAdjustable brightnessApp connectivityUSB-C charging2.3-9.2x magnification, 35mm Objective3.3-13.2x magnification, 50mm Objective Burris BTH 50 3.3-13.2x Thermal Handheld 300630