Impulse TENS D5 Digital TENS/EMS Combination Device.The Impulse TENS D5 is a digital dual channel combination electrotherapy device. It incorporates transcutaneous electrical nerve stimulator (TENS) for pain relief and an electronic muscle stimulator (EMS) used for stimulating healthy muscles in order to improve and facilitate muscle performance.Includes:- Four (4) 2 x 2 Electrodes.- Two (2) Lead Wires.- Two (2) AA Alkaline Batteries.- One (1) Instruction Manual.- One (1) Carrying Pouch.