I bought this for my husband who has had anxiety & depression, along with OCD, sensory overload, etc, to help in moments of stress, anxiety, and fidgeting. He LOVES it. His favorite part is the buttons and all of the clicking. It's definitely has many repetitive noises but it's not super loud, jusy enough to notice. It personally doesn't bother me (yet). I am used to hearing water bottles click and fingers tap. The single silicone ball he tends to suck on (he's a chewer), he is trying hard not to chew it, knowing it could break. Going to get him one of those chewable necklaces too! We have only had it for a day, so too soon to tell how well it will help him focus on calming when the fine comes. I'm hopeful though! :)Edit: after two days, one of the 3-set silicone balls came off. He's not sure what happened (it's not the one he chewed/sucked on), it was half way ripped off, held by a little bit of silicone. Thinking maybe tugging on it too hard? Still happy with the rest of the item though. No big deal to us.