NEC NP31ZL-4K, 11.3 - 14.1 mm, 1.96 - 2.3, Black, NEC PX1005QL, 2.82 lbs (1.28 kg) NEC NP31ZL-4K. Focal length range: 11.3 - 14.1 mm, Aperture range (F-F): 1.96 - 2.3, Product color: Black. Weight: 2.82 lbs (1.28 kg)