ATN OTS LT 320 2-4x Thermal Viewer 320x240 They didn't build it to sit in your hand, but that makes the ATN OTS LT 320 2-4x Thermal Viewer an entirely new device. Designed to ergonomically fit in your hand, these Thermal Imaging Monoculars by ATN are easy to control and feature a textured surface which improves your grip. A 25mm eye relief is surprisingly comfortable and lightweight, and the ATN OTS LT 320 2-4x Thermal Viewer has an extended 320x960 sensor that produces high-resolution images. For a powerful and rugged thermal handheld device, look no further than the ATN OTS LT 320 2-4x Thermal Viewer.image Specifications: - Type: Thermal Viewer - Magnification: 2 - 4 x - Resolution: 320x240 pixels - Objective Lens Diameter: 25 mm - Field of View, Angle: 11.4 - 8.6 degrees - Eye Relief: 25 mm - Battery Type: Stand Alone Lithium - Battery Life: 10 hours - Refresh Rate: 60 Hz - Water Resistance Level: Waterproof - Battery Quantity: 1 - Color: Black - Length: 7.7 in - Width: 2.6 in - Height: 3 in - Weight: 1.2 lb