This pre-owned Empi Select TENS Unit Kit is designed for targeted, non-invasive electrical nerve stimulation to manage localized body pain. The portable handheld unit features dual-channel controls and targeted setting buttons for the knee, shoulder, lower back/hip, and hand/wrist. The kit includes the main controller, lead wires, original packaging, and user manuals. Please note that adhesive electrode gel pads are not included and must be purchased separately prior to use.