I have very painful period pains and I find it very helpful in relieving them, I can say that it is not very effective for me for pleasure reasons, but if you have severe abdominal period pains, I would turn it down to very low power and use it only on the buttocks and abdomen and it works well.
The charger is fine for me, I did not find any problems with charging, but there may be in the future!
I bought the pink one, so it is very beautiful!