XcelTrax Air Wlkr Sml Low Boot M 4.5 7 W 6 8 Parallel Bars Pulse Rate: 40~180 times min Color:Yellow Pulse Rate: 40~180 times min 2 Channel Combination * Easy to add modularity allows the addition of two additional channels of electrotherapy light therapy or a battery module * High contrast 5 (13 cm) FSTN LCD monochromatic user interface * Two independent electrotherapy channels expandable to four independent channels * Multiple waveform electrotherapy six clinical waveforms: Interferential Premodulated High Volt Russian Symmetrical Biphasic and Microcurrent * Documentation of treatment data with Patient Data Cards * User defined protocols for your specific needs * Dual frequency ultrasound at 1 or 3 Designed for ideal support and comfort following trauma or post operative procedure * The lightweight design and unique pre shaped ergonomic frame help to modify the level of pressure on the injury at both the malleoli and lower leg * The soft nylon foam liner has an integrated pump design making the pneumatic liner simple to inflate and adjust *