"The G5 is the professional grade brand used by professional athletes, physical therapists, massage therapists, respiratory therapy and is also found in the clinical environment. An invaluable tool for assisting in loosening chest secretions in the lungs.The G5 VibracareÂ® Percussor is our durable, hand-held percussor used in respiratory therapy applications. Totally self-contained, and weighing less than three pounds, it provides optimal freedom of movement and portability with a ten foot hospital grade power cord. This model may be used with a variety of applicators and has a continuously-variable speed range of 20 - 50 cycles per second. This combination of applicators and speeds provides for a highly-versatile treatment range. It is the only hand-held percussor/massager to be granted C.S.A's highest medical operational rating. "