I personally the Nockturnals may be one of the worst pieces of archery equipment I have ever bought. I gave them a shot 6-7 years ago and the only positive about them is they were bright.
the negatives, of the 6 I had 4 failed before they ever made it to the field. Most of which was due to the shorty reset switch. On top of this the customer service for them was horrible. I will admit the CS part was on me too because i did not have a receipt any longer but not even a mention of replacement, basically I was SOL.
From that experience I started doing some research and had some discussion with a buddy of mine who owns a shop up in Wisconsin. Ended up with the Nock Out nocks and they are fantastic. 1 size fits all, bright, durable, practice mode, and easy on/off activation. I think they are even a few bucks cheaper than Nockturnals but they could charge double and I would pay.
This year I shot a yote and he snapped off the nock and I could not find it buried under the snow (5-6” and morning). 36 hours after shooting him I went back and the Nock showed up bright under the snow in the dark. Still in my quiver today and works great