⚡️【USB Rechargeable】 Up to 70 hrs. Build-in 2600 mAh rechargeable lithium battery provides up to 70 hrs working time (interval mode). So it will be suitable for outdoor fishing, fish transportation and power outages, etc. You can charge it with devices with a USB interface, such as a power bank, a laptop, a car cigarette lighter, or a wall charger..💨【Strong Air Volume】The air pump can produce a large amount of aeration and provide sufficient air circulation in the fish tank. In continuous air supply mode, this air pump will continue to produce bubbles. The air flow can reach a maximum 3L/min. The air pressure will be 0.018 Mpa. In interval air supply mode, this air pump will pause for 10 seconds every 10 seconds, to save energy and prolong usage time..♻️【Energy-Saving&Quiet】The air pump's power is 1W, so that it is energy-efficient and won't get overheated while operating. Minimum 40 dB in lowest flow rate. It won't disturb your sleep while running..🎣【Rich Applicable Scenarios】This quiet air pump is perfect for both Freshwater and Marine Aquariums, great to be used for all types of tanks with capacity of 5-15 Gal..👍【Accessories&Warranty】1 x Air Pump, 1 x Air Tube, 1 x Air Stone, 1 x USB Power Cord. Our air pump is built with durability and safety, based on thoughtful design. In the remote possibility that you're not satisfied with our product, just contact us, and we will gladly give you a new replacement. Provide 7&24 professional after-sales service.