ATN Thor 4 Series, 2.5-25x, 640x480.The Next Generation of Thermal Sensors are here and they are powered by ATN’s Obsidian IV Dual core. Higher thermal sensitivity, improved contrasts, near silent shutter, and improved resolution make the new ATN ThOR 4 Smart Thermal Riflescope the sight to own. Easy to use and quick to learn but with all the features that you have come to expect from an ATN Smart scope. Ultra Sensitive Next Gen Sensor - Is capable of capturing crisp clear images at the furthest ranges with improved resolution, higher sensitivity, and smooth gradations even in total darkness. Ballistic Calculator- Hunt responsibly by making sure your shot hits the target Each and Every time. Range, Wind, Multiple-Weapon Profiles, Angle to target, Temperature, Humidity, Plus more.