that camera is not a true Sony branded product. It just makes use of a sony chip like so many other cams. Dont ever buy an unbranded or unheard of IP cam, they WILL give you trouble and wont be compatible with many recording systems.
P.S Generally half the quoted IR distance for true effective range.
P.P.S If you get a 100m IR cam it will generally flare up an object that is i.e 10m away from cam. IR is so strong it will create and very white image on the object.