TENS 7000 Digital TENS Unit with Accessories - Muscle Stimulator Machine for Back Pain Relief, Sciatica, Neck, Nerve, Shoulder, Hip, Elbow, Muscle Pain. 

Relief Prescription-strength pain relief

- Five modes of operation: burst, normal, modulation, strength duration 1 (SD1), and strength duration 2 (SD2)

- 12 intensity levels

- A timer that can be set for up to 60 minutes

- Silver coating for added durability

- Comes with two lead wires, four reusable electrodes, a 9-volt battery, a quick start guide, and a hard carry case

- Extra 24 Electrode pads