【Super Quiet Design】The noise is less than 40dB, this aquarium air pump has four non-slip rubber feet at the bottom, it won’t disturb your sleep even when working at night. < p>【Powerful Motor】Powerful oxygen pump with maximum airflow of 5000ml per minute, providing stable airflow to your aquarium. A small air pump won’t take up much space. 【2 Adjustable Air Outlets】Double air outlet air pump with adjustable knob to adjust the airflow according to your needs. 【Safety and Energy Saving】The aquarium air pump is designed with overheating and overload protection, and it works continuously without power consumption. 【Wide Compatibility】Applicable to freshwater and saltwater tanks, widely used in aquariums, fish tanks, breeding ponds and other scenarios. Contents of the delivery : 1 x HQ-602 double head oxygen pump, black, 5611cm