So, Yes I love our son's pup, GOOSE and he's a very cooperative model.
I do a lot of pup-sitting and will be using this lit collar for when I have pups go outside for the "last call"
A lot of country properties (fenced), but it's dark out there! Really happy about this "lit" function.
I brought the collar to a pet-sit and tried this on Lacey a German Shepherd mix and too her out at dark to get these pics. One aspect I noted was that her longer neck hair covered a bit of the first ring, but it was really nice to be able to "spot" her easily.
The collar has three "lit" settings...static, blinking, and traveling/running light.
Unlikely I would use this as a daytime collar mostly because it's heavier
I took the collar into a windowless bathroom to try and capture the lit-function (no bueno) - but - the lighting on this collar is very bright.
That it can be recharged with ease is also a wonderful function as adding/changing batteries is a pain - plus, the collar would be more heavy for the pup.
I got Goose the MEDIUM (17.3"--21.2") with holes to adjust -
A relaxed measurement is 18". His current collar is 18". This Lavender Medium can be set at the 2nd or 3rd hole with ease. Love the color and Goose is chill that it's more of a "girl" color. He just likes the treats for his modeling work! VERY PLEASED!!!!