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

Battery powered by built-in 2200mAh lithium battery, the air pump has long battery life, running continuously for 24-30 hours in normal mode and 30-36 hours in intermittent mode. Rechargeable Type-C - With Type-C electrical interface, the aquarium battery air pump can be easily charged with phone charger, power bank or laptop. An essential backup air source during outdoor fishing, power outages or transporting fish. Adjustable modes and flow: Normal mode: constant airflow without interruption; Intermittent mode: works for 10s and stops for 10s. Four levels of air flow available: just press the "+/-" button to get the desired air flow. Constant Flow Rate: Maximum Flow Rate: 1.6L/Min, Power: 1.5W, Pressure: ≥0.015MPa. The USB rechargeable oxygen pump is ideal for aquariums or buckets from 20 to 75 litres. Complete 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.