Hi Blow 20 air pump. Made in Japan

18 ltr/min air pump Exhaust Volume 18 ltr/min Power Consumption 17 watts Weight 3.2 kg Compact and Powerful Hi-Blow Air Pumps incorporate Elecro-magnets which act upon permanent magnets providing perfectly-balanced vibration and allowing a compact but powerful device. Reliable The only moving parts consist of an actuating rod supported by special synthetic rubber diaphragms which vibrate laterally permitting long-term continuous operation. Ultra Quiet Operation All internal moving parts are rubber-spaced to eliminate vibration and a sturdy thick-walled metal casing ensures silent operation. Low Energy Consumption Operation is based upon the principle of Elecro-magnetic vibration which eliminates the need for sliding parts thereby minimizing power consumption while maintaining high efficiency as well as long-term reliability. No Lubrication Necessary There is no sliding parts and therefore no need for lubrication unlike conventional designs that can transfer oil-contaminated air into its environment. An added advantage thus is that the exhausted air is always clean ideal to be used in the environments where clean air is required.