Battery Powered: Driven by a built-in 2200 mAh lithium battery, the live bait aerator features a long working time, running continuously for 24-30 hours in normal mode and 30-36 hours in intermittent mode. Electric Type-C 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 backup air source during outdoor fishing, power outage or fish transportation. Adjustable Modes Flow Rate: Normal Mode: constant air output without interruption; Intermittent Mode: work for 10 s and stop for another 10 s. Four Air Flow Levels Available: just press the ?+/-? button to meet your desired air flow. Steady Output: Max flow rate: 25 GPH; Power: 1.5 W; Pressure: ? 0.015 MPa. The portable bait aerator works great for 5 to 20 gallon fish tanks or buckets. Supplement oxygen in time to keep your fish and bait alive and fresh. Quiet Waterproof: Give out noise less than 35 dB like a soft speaking voice. It will neither disturb your sleep indoors nor scare the fish away when fishing outdoors. It?s waterproof and won?t be damaged even if soaked for a while in deep water. AC/DC Dual-Power System: This USB air pump is compatible with both AC and DC. While connected to a power source, it consistently oxygenates your aquarium; in the event of a power outage, the built-in lithium battery will automatically activate to ensure continuous oxygen supply, effectively preventing hypoxia risks for your fish due to power loss. Pawfly Ultra Quiet Live Bait Aerator USB Rechargeable Battery Air Pump for 5-60 Gallon Bait Bucket Portable Battery Powered Oxygen Pump for Outdoor Fishing Power Outage and Fish Transportation