TENS delivers low-voltage pulses to the skin to stimulate nerve fibers and block the flow of pain signals to your brain EMS (Electrical Muscle Stimulation) stimulates healthy muscles to improve and facilitate muscle performance using electrical impulses 5 intensity levels help you customize your therapy and get the treatment you need 3 mode options let you select different electrical pulse patterns and take control of your pain relief 3 timer settings give you the choice of 10 minute, 20 minute, or 40 minute treatment times with auto off, so you can relax and let the device work its magic Includes 1 set of electrode pads for relieving foot pain and 1 set of electrode pads for relieving body pain Portable; for easy use at home or while traveling Water spray bottle included; use to improve conductivity Battery operated; 2 “AAA” batteries included Includes: TENS & EMS Pain Therapy Device, 1 pair body electrode pads, 1 pair foot electrode pads, 2 “AAA” batteries, cable, water spray bottle