Zewa SpaBuddy Sport, Electrotherapy Pain Relief, for Muscles and Joint Pain.Natural drug free pain relief using electromassage therapy (TENS). Provides temporary relief of pain associated with sore, tired, aching muscles associated to over excursion, strains, exercise or normal household and work activities. Incorporates the same technology used by healthcare professionals easily and safely in your own home. - Large LCD Display. - 8 Preset computer-controlled programs. - 30 intensity levels. - Timer (5 - 95 minutes and Continuous). - Pulse intensity: Max 100mA. - Includes 4 Self-adhering electrodes.