This air pump is well built to produce a good volume of air quietly with its low power consumption. Makes your aquarium oxygen levels high and helps keep your fish healthy. Features quiet, compact size and lightweight. Feature - Color: As shown. - Material: Plastic. - Size: 12x7.5x6cm - Voltage: 110-120V - Frequency: 60Hz - Power: 2.5W - Air pressure: 0.018Mpa - Pump efficiency: 1.8L/Min - Ultra Silent: Using high-tech special internal muffler design, really ultra silent, which will not disturb your sleep, work or the inhabitants in the aquarium. - Wide Compatibility: This oxygen are great for small and medium fish tanks and fits all kinds of aquarium creatures. - Excellent Design: Compact and mini design, lightweight to carry. Superb air floe power, reliable, durable, safe and silent. - Novel appearance, high efficiency and saving energy. Uniform and fine bubble, and its not easy to block. - Non-slip and shockproof base can effectively absorb noises, and its not easy to fall. - Included check prevents water flowing back and damaging the pump. - With overtemperature and overload protection, the pump can run continuously for a long time. - Warm Tip: Dear buyer, Due to lighting effect,monitors brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand Thank you