The TENStem eco basic is the most popular TENS unit in our range. TENStem eco basic offers a great diversity of programs for an easy selection of the treatment parameters. The TENStem eco basic includes 12 pre-set programs such as burst, frequency modulation, muscle stimulation, dynamic stimulation, HAN stimulation.The TENStem eco basic also offers 4 free programs for own settings. The latest program P16 now offers the possibility of stimulating with monophasic current. P16 is suitable for ionto..