Using the latest energy-saving technology, the portable air pump 10W/18W works more effectively, saving more energy. The shock-absorbing rubber feet and the upgraded motor helps, pump air ultra- quietly. Although the air pump size is big and powerful, it works quietly. The Hygger HG067 AC/DC Battery Air Pump is the perfect solution for power outages. With dual power operation (AC & DC), this high-efficiency pump automatically switches to battery mode during blackouts. It delivers a strong and consistent airflow, keeping your fish safe and oxygenated at all times. Ideal for both freshwater and marine tanks, as well as bait buckets and transport. - Dual AC/DC operation - Automatically switches to battery during outages - Powerful and energy efficient - Low noise output - Compact and portable design - Ideal for emergencies, travel, or power failure protection