Rechargeable Aquarium Air Pump, Fish Tank Air Pump, Fish Aerator, When you go fishing, moving, traveling, bait cooling, transporting bait or minnows, When your home is out of power, This Rechargeable aquarium air pump come in handy. It can even save the life of your fishes & aquarium pet. Just in case, It is necessary to prepare an emergency backup aquarium air pump, aquarium and outdoor fishing air pump is designed for fish lovers to offer more oxygen to their pets while indoor, or outdoor. Excellent High Performance: This portable USB air pump is built in lithium battery, compact and energy-saving. Ideal choice for power failure: USB interface can directly charge the built-in battery on the computer or external power supply. Enough : This fish tank air pump provide abundance air flow for various high-grade aquariums, aquaculture oxygenation or nozzle decoration. Two working modes: you can set the continuous mode to stabilize a large number of , and the intermittent mode to extend the working time without charging, Each air pump individually tank tested to assure highest quality. Please don't put it in an environment of up 122℉. Item Type:Aquarium Oxygen Air Pump Model:AR11 Type:Waterproof Power:1W Voltage:AC110V-240V 50/60HZ; DC3.7V Air Pressure:0.018Mpa Air Output:3L/Min Outlet:Single Hole Battery Capacity:1800mAh Net Weight:324g Due to different product batches, the appearance , which does not affect the use. Colour:As Shown Material:Plastic Package Contents: 1 x Single Hole Aquarium Air Pump 1 x Air Stone 1 x Air Hose 1 x Check Valve 1 x USB Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.