Lens magnification ,x	3x	5x
		bjective lens diameter, mm	44mm	50mm
		Lens system	50mmF/1.2	80mmF/1.7
		FOV at distance 100m/110yards, m	19/63	16/52
		Field of view, degree	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)	AA battery (one by 1.5V)
		Battery life IR on,	hour Up to 20	hour Up to 20
		Battery life IR off,	hour Up to 60	hour Up to 60
		Overall dimensions, L×H×W, mm	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-resistance	IPX4	IPX4
		Humidity,%	93	93
		Operating temperature, ℃	-30°to+45°	-30°to+45°
		Storage temperature, ℃	0°to+60°	0°to+60°