Intelect Portable Electrotherapy for symptomatic relief and management of chronic pain and acute post-surgical or post-trauma pain. TENS is used to assist the clinician in controlling patient pain levels. This unit has an easy-to-read LCD display and convenient digital controls. Includes lead wires, 9-volt battery, DURA-STICK Self-Adhesive Electrodes and a convenient carrying case. Dual Independent Channels Adjustable Timer Adjustable Frequency and Pulse Duration parameters Features five modes: Burst, Normal, Modulated Rate and Width, Strength Duration and Bi-Pulse Easy-to-read LCD display and convenient digital controls One-year warranty (unit only).