Anti-bedsore mattress, alternating pressure pad with electric pump, bedsore prevention, 3-mode cycle, nursing air mattress, medical care, easy to handle, with Japanese instruction manual ⭐️ Opened but unused. It's a bargain for those who need it, as it was purchased on Amazon for 8,980 yen. ⭐️ Shipping included 【Principle of Bedsore Prevention】 This product has two types of air cushions, "A" and "B". When the product is operating, there are the following three states: ① Air cushions in group A inflate, and air cushions in group B deflate. ② Air cushions in group B inflate, and air cushions in group A deflate. ③ Air cushions in groups A and B inflate simultaneously. By cyclically switching between these three states (12-minute cycle), the pressure points are changed to avoid long-term pressure on the body, effectively preventing the formation of bedsores in bedridden patients. 【Quiet Air Pump】 When the air pump is operating, the low noise (≤45 decibels) does not affect the patient's rest. The operating power can be adjusted freely, so the softness of the air cushion can be changed by adjusting the air pump. There is a hook on the back of the air pump, which can be hung on a table or bed. The air pump needs to be kept clean and dry, and its warranty period is one year. 【Material of Air Cushion】 The air cushion is made using fully automatic integrated high-temperature hot-press technology, making it durable, well-sealed, and leak-proof. High-quality soft PVC fabric is used, providing a better fit, gentle on the skin, and harmless to the body. It is odorless, breathable, non-sticky, non-sweaty, and keeps the skin dry. Please avoid piercing the surface with sharp objects during use. 【Product Specifications】 Air cushion load: ≤135kg. Air cushion size: Length 200cm, width 90cm, height 70mm. Both sides of the air cushion are extended by 38cm, and can be tucked under the mattress to secure the air cushion. Air pump inflation pressure (kPa): ≧15kPa (115mmHg). Air pump flow rate (L/min): ≧5L/min.