Like the title says, I have purchased several vibrating rings and this is the only one I think is worth the premium price. Unlike many other vibrating rings that just shove a bullet vibrator into some rubber, this ring is USB chargeable with its own dedicated motor inside that cannot be tampered with. As a result, the vibrations are very noticeable even on the lowest setting, and get very intense on the highest. Like many other vibrating cock rings it has your basic incremental vibrations, then different vibrating patterns that are sure to please (my favourite is the 'randomized' one that teases and surprises.) The material is a very soft silicone that almost feels lubricated because of how smooth it is, very comfortable. I have not fully tested the battery life, but i was able to leave it running for over an hour on a full charge one time, so it should be enough for long sessions. I have purchased two Tors because