I am so glad that the product designers got smart and made this rechargeable! I have one already that I've been using for a while, but it takes batteries and I would much rather have a system that was chargeable because I don't have to waste money on batteries, as well as having a product that prevents me from creating waste for the environment. This one works just as well as the one I had before, but now I don't have to continue to invest money in making it work, for the money that's a steal!