The Arm sight by FLIR MNVD is a multi-purpose night vision monocular. It can be hand held, head mounted, helmet mounted, or weapon mounted. With a 51 Degree field of view (FOV), it provides a large visual field without needing to move the monocular. The MNVD 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 MNVD can run up to 40 hours.