These have an operating range of -60°F to 120°F, or -51°C to +52°C.
Unfortunately, this product has been discontinued and we no longer have that information available. We recommend reaching out to the manufacturer for this inquiry. Their contact information can be found here: http://www.nightoptics.com/CTUS.htm.
This has a 40 degree field of view, so you will have to look around a bit to ensure your immediate surroundings as you traverse terrain.
This PVS-7 uses a standard bayonet/horn style mil-spec mount. There are a variety of companies that makes mounts that would work, but one of the best is the Wilcox L4 G11.
This is the traditional intensifier tube that produces a black/green image.
Yes, the unit is listed as waterproof.
This is not a helmet cut headset, it's designed to fit your head without a helmet. For a helmet mount you would need a different adapter depending on the helmet you are trying to mount it on.
Yes, it does.