... the cold type system * inflate/deflate the air bed, 1ItemBPK-2022NameElectric air pump3VoltageAC100V-240V4Pressure0.51-0.65psi5Flow400L/min6CertificationCE ROHS7Noise< ... color box,12pcs/ctn11Coloras you said12FunctionInflate the inflatable products,air bed, PVC products.13Advantageswith ceritifications, you can use ... type system.So you can use it for a long time. Pictures of products and using method samples ...