At first glance 16x would seem too much for a compact pair of binoculars to handle. This is not the case with the Celestron Upclose 16x32s. They are a budget pair of binoculars, so don’texpect a high contrast bright image. You will find a lot of false colour. But what you do get is an image good enough to make out distant planes and ships. That is what they are designed for.
Build quality is better than many sub £20 optics. I have tested a few, and have never found a set that were out of collimation. These are a much better bet than cheap zoom binoculars that usually get thrown in a bin.
Eye relief is not long, so not suitable for spectacle wearers. With the extra magnification a steady hand is needed. The double hinged lightweight design means they can easily be put in a shirt pocket
Not suitable for low light observations