Title: Cumbersome, poor ergonomics, hard to adjust and use
Review: I found these borderline unusable for three primary reasons:1) The interocular distance (spacing between the eyes) is quite narrow, at least for me, and non-adjustable2) There's a huge one-piece plastic cover for one end that's always in the way (but you wouldn't want to discard it, so you have to deal with it)3) The focus is sensitive and to properly do it you have to focus both ends of each eyepieceIn short, you'd never want to rely on these in a hurry, but if you have time to fight with the ergonomics and focusing then they do indeed actually function. I found, however, that unless you're within range of the built-in IR illuminators that the light-amplification was somewhat minimal. If you can see it through the binoculars, odds are you can see it unaided.
Is this product review negative?