Aquarium Air Pump on Lithium Battery USB Rechargeable Oxygen Pump for Aquarium 20-500 L Silent and Portable Aquarium Bubbler for Outdoor Fishing Power Outage

Powered by battery: Powered by a built-in 3350 mAh lithium battery, the live bait aerator has a long battery life, working continuously for 30 to 36 hours in normal mode and 36 to 42 hours in intermittent mode. Rechargeable: With a Type-C interface, the USB rechargeable battery air pump can be easily recharged with a phone charger, power bank, or laptop. An essential air backup source during outdoor fishing, power outage, or fish transportation. Adjustable modes and flow rates: Normal mode: constant airflow without interruption; intermittent mode: operates for 10 s and stops for 10 s. Four levels of air flow available: just press the "+/-" button to get the desired air flow. Constant Flow Rate: Maximum Flow Rate: 190L/H; Power: 3W; Pressure: ≥ 0.018MPa. The portable bait aerator works great for aquariums or buckets from 40 to 230 L. Supplemental oxygen in time to keep your fish and bait alive and fresh. Silent and waterproof: The noise emitted is less than 35dB, like a soft voice. It will not disturb your sleep indoors and will not scare fish when fishing outdoors. It is waterproof and will not be damaged even if it is soaked for a while in deep water.