this review title is: works worked replaced and the content is: it is rechargeable which eliminates the battery drama replacement or rechargeables you can use it while it charges but it is best to just let the thing recharge all the way and use it as needed i use mine at night then apply a foot cream to penetrate and moisturize over night nice investment easy clean and maintain i have feet againupdate after having this item for a year the charge has ceased to hold and does not pack as much as a punch as it used toi have replaced it with another different electronic file i guess in this age of everything being disposable it lasted as long as it was meant to.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.