Image intensifier grade	2	2
		Magnification (x)	4X	1X
		Field of view (degrees)	13	40
		Eyepiece diopter adjustment range (diopter)	+5 / -5	+5 / -5
		Lens adjustment range (m)	0.25 ~ ∞	0.25 ~ ∞
		Dimensions (mm)	184X60X78	115X42X62
		Weight (grams)	550	300
		Supply voltage (V)	2.8 ± 8	2.8 ± 8
		Battery Type	(CR123)	(CR123)
		Continuous working time (hours) IR OFF	80	80
		Continuous working time (hours) IR ON	40	40
		Storage temperature range	-50 / +70	-50 / +70
		Operating temperature range (℃)	-40 / +40	-40 / +40
		25 ℃ relative humidity of	98%	98%
		Image intensifier super pipe	II	II
		Cathode type	18mmS-25	18mmS-25
		Cathode sensitivity	≥ 600	≥ 600
		Resolution, lp / mm	45-53	45-53
		Gain fl / fcd	16000-25000	16000-25000
		Noise ratio	18-20	18-20
		Sensitivity values	≥ 1150	≥ 1150
		Image intensifier  tube life,	10000 hours	10000 hours