Uzi knives - night vision monocular measures 6 x 3 1/2 x 1 3/4. model: Uzinv100. Black composition housing. Digital display. Manual focus. See up to 100 meters at night. 8GB micro-ds card included. 3x magnification. 2x digital zoom. Highly sensitive CMOS sensor. 3W powered Infrared LED. Diopter adjustment. Record and playback video and images. Uses four AA batteries (not included).