this link is just the difference for one customer

this non-invasive current stimulates the body's natural repair mechanisms, promoting cellular exchange. in combination with the therapist's manual approach, it offers excellent rehabilitation results thanks to fast recovery of muscle and joint functions. tecar therapy differs from electrostimulation or ultrasound via the generation of a high frequency current which is non-invasive and natural for the human body. automatic protection system: when the positive and negative terminals are connected together, it will automatically suspend work. optional ret stainless handle with temperature control: it can prevent customers from suffering or even scalding due to high temperature during operation.