This Treatment Scheme Is Intended For Those With Established Surface Pressure Sore, Even At Very Elevated Danger Of Developing A Pressure Sore. By Constant Motion, It Can Provide Great Pressure To Decrease. Manual Pressure Adjustment Low Noise Convenient Hook (For Bed Hanging) Technical Specifications: Rated Voltage: 220V Power: 10Va Outer Air Presser: >= 14Kpa Outer Flow: >= 5L/Min Working: Continuously Size: 200 (L) X 90 (W) X 9 (H) Cm/6.5Ft (L) X 3Ft (W) X 3.5Inch(H) Packaging: Piece