Lens magnification ,x	3x	5x
		Objective lens diameter,mm	44	50
		Lens system	50mmF/1.2	80mmF/1.7
		FOV at distance 100m/110yards,m	19/63	16/52
		Field of view,deg	18	12.5
		Focus range,m	1.5 to infinity	1.0 to infinity
		Exit pupil diameter,mm	6	6
		Eyepiece Dioper adjustment,dptr	+4,-4	+4,-4
		Eye relief,mm	15	15
		Power supply,v	AA battery (one by 1.5V) for RG-35	CR-123 3V
		Battery life IR on,hour	Up to 20	Up to 20
		Battery life IR off,hour	Up to 60	Up to 60
		Overall dimensions,L×H×W,mm/in	183×81×61	203×81×61
		Weight,g	530	613
		Effective Distance
		Detection range,m	200/150	220/175
		IR power,mw	25≤	25≤
		IR wavelength,nm	850	850
		IR effective distance,m	25	25
		Environmental Data
		IP standard of water-resistence	IPX4	IPX4
		Humidity,%	93	93
		Operating temperature, ℃	-30°to+45°	-30°to+45°
		Storage temperature, ℃	0°to+60°	0°to+60°