This is a great little gadget. It uses a AA battery and can be used in the bath. I have been using it for a couple of days now. I can't verify that is does what it says but I can say that it gives a great facial massage. I feel refreshed after using this massager. I plan on using this every day maybe more, especially on days that I feel frazzled. If it helps with wrinkles and double chin that will be an added bonus.