This striking and soul capturing Ortho-TENS is a powerful addition to the Spinal Rehab Solutions family of prestigious electro-therapy simulators. This lightweight, compact unit takes all the guesswork out of electro-therapy with its amazing nine separate modes, six easy-to-use preset modes that are programmed with the perfect frequency setting for specific body areas including the lumbar spine, cervical spine, knee, shoulder, ankle/foot, wrist/hand. Two of the remaining modes are programmed to simulate popular therapies like IF and galvanic. The third universal setting is available that can be programmed by the doctor or patient to meet any customized need. Thus, it is worth a penny. This dual channel TENS unit operates with two AA batteries (included) and comes with everything you need including a handy belt clip for portability. It just doesn't get any easier than this! So, let’s browse through some its remarkable features & specifications: - Ortho TENS Digital Dual Channel is just awesome. - Isolated Between Channels. -It has a Amplitude of 0 ~ 130 mA. -It gives a Pulse Rate: 1 ~ 150 Hz.