Ive got the Ns50 (still waiting to sell it to ryan666 if he ever comes to collect) and i know its practically the same apart from the camera,
they are very good bits of kit, i had no problem out shooting up to 60yrds with mine so i know you will have no problem spotting vermin much further
I would definitely invest in a different camera attachment though, the black sleeves are annoying, oh and if the image is blurry the camera lens turns to focus and you will get a crystal clear image once set set up you can just stick it on and away you go, very good and get the Li-ion slimline bat