The Holosun DRS Digital NV/IR Illuminator Night Vision Digital Reflex Sight is a digital reflex sight with a built-in thermal overlay. This optic sight other than having thermal capabilities is also packed full of features: Feature Set: Red Dot Sight w/ Fusion Thermal Overlay 50FPS Overlay Refresh Rate Digital Zoom Up To 8x Modes: White Hot, Black Hot, Highlight, Outline, Fusion Multiple Reticle System (MRS): 65 MOA Circle & 2 MOA Dot; 2 MOA Dot; 65 MOA Circle Cross or T Style Thermal Vision Reticles IP67 Certified Waterproof Sensor Resoulution : 256 x 192 px Reticle Brightness: 8 Daylight & 4 Night Vision Compatible Settings Battery Life: 20 Hours Window Size: 1.25 x 0.98 Inch Takes 2x 18350 Batteries