Hard to charge. Terrible directions. Dang near impossible to find the vibe level you want. If you have the patience of a saint, you can get it to work correctly...eventually. The headaches are worth nowhere near the money it costs.
It works you just got to be patient and it gives a good jolt if your not careful. One complaint is the stickers don't adhere if you have a pooh so you'll have to where a waist belt to hold in place or keep purchasing new sticker gels which is about 19.99 on amazon.