Fusion Thermal WTS300 Tempest 660D LRF 3.4X - 13.6X 50 mm 640X512 Resolution Tempest 660D LRF Made To Meet The demands Of The American Shooter. This Scope Is Built Like a Tank And Very Simple To Operate. Get Ready For a Different Kind Of View, as The Heat Differential Detection capabilities Of This Device Deliver Optical images That Are Nothing Short Of Stunning. Magnification: 3.4X - 13.6X Objective: 50 mm Field Of View: 380 ft @ 1000 yds Battery Size: 18650 Weight: 28 Oz Resolution: 640X512 Battery Life: 13+ Hrs