As a Medium Frequency Interferential Treatment Device, this Four Channel E-TENS™ promises to offer effective pain management, with interchangeable and user-friendly programs. Features four channels which operates independently, users can apply different intensities of treatment to different body parts in one setting. The E-TENS™ also features the famous Russian Current-the long researched and proven effective current for TENS treatment. Additionally, the adjustable medium frequencies are topped with interferential current to prevent adaptation. In turn, E-TENS™ will continue to provide comfortable, yet stimulating effects each time.