Generation 1 Magnification, x 3 Lens diameter, mm 42 Field of View, degree 20 Eye Relief, mm 12 Exit Pupil, mm 5 Diopter adjustment, dptr. ±4 Resolution, lines per mm 36 Minimum focusing distance, m 1 Range of detection, m (object 1,7m high, "quarter moon") 150 IR Wavelenght, nm 805 Power supply, V 3V Battery Type CR123A Operating Temperature, °C -30...+40 Tripod Mount, inch 1/4 Dimensions, mm 165x55x83 Weight, kg 0.43