Features: 1. Fish & Shrimp Savior: portable aquarium air pump will come in handy. When you go fishing, traveling, bait cooling, transporting fish or when your home is out of power. The air pump can even save the life of minnows. Just in case, it is necessary to prepare an emergency air pump 2. Suitable for 1-30 Gallon Tank: Designed for fresh and saltwater, 1 Oxygen outlet, Air Out 2.5 L/Min, Power 2Watt. Fits for fish tanks up to 30 gallon, larger aquariums needs more pump. The Bubbles Air Pump turns any bait bucket, cooler or ice chest into a portable live well 3. Low Power Consumption: Fish tank aerator operated by 2 D batteries (1.5v) . Ordinary 2D batteries can last about 18 hours without interruption 4. Ultra Quiet: Only 40dB noise maximum, quieter than other air pump. What's more, you can further reduce the noise by putting a soft cloth under the fish bubbler 5. Compact Portable Design: Easy to carry. Size: 5.7×3×1.7 inches (14.3×7.5×4.3 cm). Weight: 0.5lb (200g) Specifications: 1. Material: plastic & magnet 2. Voltage:2 D batteries (NOT INCLUDED) 3. Power: 2w