Pain Relief, different Intensity levels, Electric Pulse Massager, muscle relaxer It comes with multiple modes and intensity levels, as indicated on the device and the accompanying manual. The packaging includes a storage bag, electrode pads, and lead wires. The device features a screen displaying settings and a user interface with buttons for adjusting intensity and modes. TENS units like this are used to manage pain by sending electrical pulses through the skin to stimulate nerves and block pain signals. They can also be used for muscle recovery and rehabilitation through EMS.