Burris BTC 35 Thermal Clip-on Thermal Viewer - Use the Clip-on as a handheld tracker or turn any traditional riflescope into a thermal scope with a simple attachment. The Clip-on's 4 power zoom and 4 color palettes ensures nothing will make it through your sight picture unnoticed. Burris Clip-on will help you take night hunting to a whole new level! Converts traditional riflescope to a thermal scope 4 color palettes - Black hot, White hot, Red hot, Green hot, Blue hot Hot track Use the zoom on your traditional scope to enlarge your target Adjustable contrast Adjustable brightness IP67 Included cable plugs into the BTC with 7-pin LEMO connector, and the other end is USB-A for running off of a USB power bank Optional Y-cable offers the above power bank option, plus RCA video-out from the same 7-pin LEMO port.