Advertised 1000 yards; more like 700 functionality, it was enough for me Definitely need the ability to ACCESS external power or AA battery CONTACTS were spirited; inserted correctly, just moody Requires external POWER PORTo Requires external power cable with built-in 9V regulator; for a 12V portable supply Suggestion: Bring a RED lens tactical flashlight (or regular) to test the panel buttons in the dark. Industrial fair. The IR image resolution is wonderful, fine details can be seen within 100 yards and the IR illumination is set to 7. The clarity at 40 yards is amazing. I am impressed with the advanced technology of this company. Aim sharpness compared to a daylight scope is roughly equivalent to the "blind spot of a ZEHN ring”. We have cattle and open fields surrounding the ranch, so we have threats from imported Canadian wolves in Montana (government jerks). I bought this unit for night duty and it is the BEST I have found. Using this NOD with a tripod allows me to fire off a shotgun that gets things going. Beyond 400 meters pixel sharpness becomes tricky, still fine, but clarity diminishes and beyond 900 meters definite identification becomes questionable.
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