ARMASIGHT BNVD-51 3F Compact Dual Tube Night Vision Goggle/Binocular Gen 4 (FLAG) Filmless Auto Gated. The The Armasight by FLIR BNVD is a dual-channel night vision system. With a 51° field of view (FOV), it provides a large visual field without needing to move the binoculars. The BNVD uses advanced multi-coated optics and is built to last with a compact composite housing. Operating from a single AA alkaline battery or CR123A battery, the BNVD can run up to 20 hours. Also equipped with an integral infrared illuminator for reading in the dark. Exceptional Field of View and Built-in ...