Description:Rechargeable battery: This oxygen water pump has a built-in battery and can be charged via USB, so you can charge it with a battery bank, USB charger or laptop USB port. Dual functions: This portable bucket pump can pump water or oxygen, which can make the water in the bucket more suitable for the fish to live, so the fish will live longer. Mix bait: This submersible water pump can pump out the water, making it more convenient to mix the fish bait. You can also use water to wash your hands after mixing the bait, convenient to use. Portable: This oxygen water pump is small and lightweight, so you can easily carry and store it in your bag, and it has a clip on the back, so you can easily fix it for a water bucket. Filter: This aquarium water pump is designed with 3 layers filter, which can make sure the water pump is more healthy and clear, and is perfect for pumping water out of dirty water. Specification:Electricity: 2000mA.Wind quantity: 3.0L/min. Water volume: 1.0 l/min. Material: ABS. Battery: 1820mAh (built-in). Size(LxWxH): Approx. 12 x 7 x 4.5cm/4.72 x 2.76 x 1.77 inch. Suction height: approx. 1240cm/inch. Tube length: approx. 1240cm/inch. Charging power: 240V, 50hz. Life expectancy: oxygen: 2h.Battery life: 8h.Lighting life: 48h. Color: green. Note:There may be a bit of color distortion due to the different resolutions of your computer. There may be slight errors due to other manual measurement. Package Included:1pc Pump (of 1 pcs. Metal fa