Description: High Performance: The Oxygen Pump features a large capacity performance. It ensures that your fish always have sufficient oxygen supply, whether at home or on the go.Intermittent Mode and Power Display: Aquarium air pump,with a simple press of a button, you can switch to intermittent mode where the pump supplies oxygen for ten seconds and stop for 15 seconds. The power display allows you to easily monitors the battery level.Simultaneous Charging and Working: This oxygen pump can work while charging, and will automatically switch to battery mode when power is cut off after being fully charged. This feature guarantees an uninterrupted oxygen supply for your fish.Portable and Quiet Design: Aquarium Bubbler, ideal for outdoor fishing trips, this portable pump comes with a back clip design for easy carrying and avoid of loss. Despite its high oxygen output, it operates quietly thanks to its bedroom level silent.Material: Made from durability ABS material, this Powerful Air Pump could meet your long term use. Specification: Battery capacity: 4800mAhpower:2WGas volume: 2x3L or min Size Chart: 12cmx8.5cm or 4.72inchx3.35inch Package Includes: 1 SetFish Tank Oxygen Pump Note: Please allow slightly errors due to manual measurement and different monitors.