Ultrasound & TENS Muscle Rehab Combine Ultrasound and TENS 11 Sports and 9 Rehab SUM Modes Wearable ultrasound system Wearable Therapeutic Ultrasound with TENS No messy Ultrasound Gel KM300pro uses ultrasound therapy for the relief ofpain and muscle spasms.lt was developed as a next generation wearable ultrasound system which transforms conventional therapeutic ultrasound technology into a small and portable ultrasound therapy unit. It is designed to work along with the human body and maximize the safe and effective delivery of a therapeutic effect. KM300pro is also an effective low frequency muscle stimulator (TENS). This means KM300pro works by producing electrical pulses that stimulate the muscles and nerve fibres in your muscle Effective pain relief