Based on this product's specifications, here are some alternatives and similar models
Electrostimulation device Beurer EM 95 S — wireless, adjustable intensity (model 662.04)
Summary description:
Beurer EM 95 S is a wireless electrostimulation device with adjustable intensity, designed for muscle stimulation and pain relief. Portable and simple to use, it offers customizable intensity levels to suit different body areas and user needs. Ideal for at-home therapy, sports recovery and relaxation, it helps improve circulation and reduce tension with targeted electrical pulses.