While the picture is awful and you might be right, my guess is based on 3 things:
1) The white dot because obviously
2) The collar is not advertised as a shock collar, just as a fence. It's main feature is beeping and vibrating to tell a dog to stop. The shock functionality is pretty obscured in advertising material. This is relevant because I'm pretty sure you aren't allowed to electrocute dogs in CA. This gives plausible deniability.
3) Speaking of plausible deniability this is advertised as a GPS collar. Every Hasan mod/fan I've seen says "oh it's just a GPS collar". This is technically true and he can say this without technically lying in the traditional sense, although it also is a shock collar.