The L3Harris Binocular Night Vision Device, also known by the military nomenclature AN/PVS-31A, is a compact and lightweight Generation III high-performance white phosphor dual-tube goggle. The PVS-31 is capable of utilizing an on-board AA or remote cold weather battery pack (included). Device weight comes in at just under 1 pound ; one of the lightest units on the market. The L3 PVS-31A features manual gain control, individually articulating optical pods, inter-pupillary distance stops, and 2376 minimum FOM Unfilmed White Phosphor intensifiers. The intensifier tubes used in the PVS-31A have a high minimum of 33 signal to noise ratio (SNR) and a minimum resolution of 72lp/mm. Furthermore, the halo value maximum is 0.85. Together all of this means a truly exceptional image quality and absolute top tier performance.\r\n\r\nThese PVS-31A come as a full kit. 2376 min FOM device (White Phosphor), data sheets, 4x AA cold weather battery pack, 90° power cable connector, and soft case. Does not include diopter inserts.\r\n\r\n1-year factory warranty. Serviceable by L3Harris even after warranty term.\r\n\r\n \r\n\r\nMANUFACTURER L3Harris Technologies\r\nDIMENSIONS 4.2″(L) x 4.2″(W) x 3.4″(H)\r\nWEIGHT 0.99 lbs (w/ Battery)\r\nFINISH Matte Black, Corrosion Resistant\r\nPOWER One (1) AA Battery (On-Board), or Four (4) AA Batteries (Remote)\r\nBATTERY LIFE >15 Hours (Single Battery), or >50 Hours (Four Batteries)\r\nWATERPROOF 66′ for 2 Hours\r\nWARRANTY 1 Year Warranty\r\nOPTICAL ------------------------------------------------------------\r\nGENERATION Gen3 U.S. L3Harris\r\nTUBE 18mm MX-11769 Variable Gain\r\nMINIMUM FIGURE OF MERIT (SNR X LP/MM) 2376\r\nFILM Unfilmed\r\nGATE Auto\r\nGAIN Adjustable/ Variable\r\nMAGNIFICATION 1X\r\nFOV 40º\r\nOBJECTIVE FOCUS 18in to Infinity\r\nDIOPTER -0.5 Standard\r\nINCLUDES AN/PVS-31A BNVD Goggle, Padded MOLLE Carry Pouch, Rubber Eye Cups, Sacrificial Windows, Wilcox Amber Filters, Remote Battery Pack, Remote Power Cable, Anti Fog Wipes, Lens Covers, Operator\'s Manual