1、Solar powered or USB power supply can be used, convenient and fast, you can choose in your will. 2、The air pump is small and portable, suitable for indoor use in pools or illuminated areas. 3、Waterproof and durable, you can use it in rainy day and it has a long service life. 4、The pump has energy‑saving motor, small temperature rise and small power consumption. 5、Used for emergency oxygen supply for aquarium power failure, fish transportation, fish in wild fishing and other places. 1 x Oxygen Pump1 x Solar Charging Board1 x Air Pipe1 x USB Charging Cable2 x Bubble Stone1 x Tee Shunt1 x English Manual Condition: 100% Brand New Item Type: Oxygen PumpMaterial: PlasticColor: As Pictures Shown Aeration Pump Size: Approx. 13.5 x 8 x 4cm / 5.3 x 3.1 x 1.6inSolar Charging Board Size: Approx. 14 x 13 x 1.8cm / 5.5 x 5.1 x 0.7inSuitable Scene: AquariumProduct Function: Oxygen Pump for Outdoor Solar Power SupplyBattery: 18650 Lithium Battery(Built in)Battery Capacity: 3600mACharging Method: Solar Powered or USB ChargingMaximum Air Flow: 1L/1 MinWaterproof Rating: IP44