Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. Interrupted D.C. Only (EMS1C) * Operates on 9 Volt batteries * Effective, easy to use, electronic muscle/ neuromuscular stimulators * Easy one hand operation including current adjustment, active probe positioning, and on-off control * Two year warranty on materials and workmanship * Weight: 5 ounces * Ideal for facial and smaller peripheral muscles *