During the day it’s fine, but I wanted to check it out in the dark and in my closet I couldn’t find the dot at all. In the garage I could only find it if I stood very still and it was just a barely perceptible pin prick of red. Luckily the Hellcat that it’s on has a front night sight.Never had an issue with mine, but I haven't had to use it emergently in the dark yet, thankfully.
You should check yours out if it’s on a carry gun.