Deep Blue Professional ADB61037 Hurricane Category 5 Professional AC/DC Battery Operated Air Pump Hurricane category 5 professional AC/DC battery operated air pump Automatically switches to battery backup in the event of power failure and recharges when power is restored The integrated d-cell battery slots of the pump are for use when main battery pack is exhausted The pump is adjustable and comes with electronic flow control with interval battery extension technology Designed with dual output ports and impact resistant housing