Fusion Thermal Tempest 660D LRF 3.4x - 13.6x 50mm Night Vision Rifle Scope 640x512 Resolution. 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. Specifications for Fusion Thermal WTS300 Tempest 660D LRF 3.4x - 13.6x 50 Mm 640x512 Resolution: Manufacturer: Fusion Thermal Magnification: 3.4 x Battery Type: 18650 Weight: 28 oz Objective Lens Diameter: 50 mm Night Vision Generation: Digital Resolution: 640x512 pixels Field of View Linear: 380 ft at 1000 yds Battery Life: 13 hours Fusion Thermal WTS300 Tempest 660D LRF 3.4x - 13.6x 50 Mm 640x512 Resolution