It's very strong that's why I buy this one. The only problem I find with it, is the plastic cap breaks easily.
Stopped working in just less than a week.
wow. wOw. WoW. WOW! This itty bitty thing packs some serious heat.
Pros: One of the most powerful vibrators I've ever owned. And the batteries last a long time.
Cons: It is SO delicate and the plastic is really thin. The lid snapped off... probably because I was holding it too tight. haha
BUT: I love it SOOOOO much, I taped the lid on with electrical tape and I can still use it until I burn the motor out or something. I would reorder in bulk just because it is THAT amazing.
Pass it by.