Lens magnification ,x	3	5	5+
		0bjective lens diameter, mm	44mm	50mm	60mm
		Lens system	59mm  F1.2	88mm  F1.7	100mm  F1.7
		FOV at distance 190m/200yards, m	197/60	138/42	118/36
		Focus range, yards	1.5 to infinity	1.0 to infinity	1.0 to infinity
		field of view ,degree	30	18	12.5
		Eye relief, mm	15	15	15
		Exit pupil diameter, mm	6	6	6
		Eyepiece Dioper adjustment, dptr	+4/-4	+4/-4	+4/-4
		Overall dimensions, L×H×W, mm	182x108x65	198x100x65	266x100x70
		Weight, g	422	520	700
		Power supply, v	AA battery (two by 1.5V)	AA battery (two by 1.5V)	AA battery (two by 1.5V)
		Battery life IR off,	Up to 70	Up to 70	Up to 70
		Battery life IR on,	hour Up to 20	hour Up to 20	hour Up to 20
		Effective Distance
		Detection range, m	200/150	220/175	220/175
		IR power, mw	25≤	25≤	25≤
		IR wavelength, nm	850	850	850
		IR effective distance, m	25	25	25
		Environmental Data
		IP standard of water-resistance	IPX4	IPX4	IPX4
		Humidity,%	93	93	93
		Operating temperature, ℃	-30°to+45°	-30°to+45°	-30°to+45°
		Storage temperature, ℃	0°to+60°	0°to+60°	0°to+60°