I would not call this a "nightlight" in the traditional sense at all. These are FAR brighter than a nightlight. These lights are functionally bright - I thought I would use them as pictured, along the stairs, but after installing the batteries, it became abundantly clear that I would much rather set them up individually, one to light a dark closet, one in the garage, and maybe one on the stairs, but each one is strong enough to light up a bigger space by itself.
The overall build quality is surprisingly good, and the motion sensor is quite sensitive and has a wide field of view. It also does a fine job of not activating in a lit or sunny room, only when its actually dark. The 20 seconds it remains lit after sensing motion is plenty to get through a dark area. Each light individually could be enough for a small room
It only remains to be seen how long a set of three AAA batteries lasts. If the longevity is good, I'd say these lights are extraordinary. I have other, rechargeable nightlights (Wyze nightlights), and they can last for a few months, but they're also a lot dimmer and don't stay on for as long after motion.
The photo shows each nightlight's overall dimensions, in the second photo, this product is the brighter one on the left.