An electrical hand-held device for body treatment, having a treatment part for performing at least one electrically operated body treatment function, and having a handle body for holding the hand-held device. The hand-held device further includes an electronic component for controlling the at least one electrically operated body treatment function. The electronic component contains a data transmission module for wireless, bidirectional data transmission. The data transmission module includes a microcontroller, at least one memory for storing data, and an antenna, wherein the data transmission module is designed to produce, in a contact-free manner, at least some of the electrical energy which is required for operation of said data transmission module.