【USB interface】The aquarium oxygen air pump is suitable for all kinds of mobile phone and power bank sockets, including mobile phone charging head, power bank, interface computer, power socket, car charger, USB solar panel, it is the best choice to save electricity and reduce consumption. 【Super Quiet】 The water pump Aquarium air adopts supercharged ceramic electric motor, featuring stable oxygen supply, low heat generation and low noise. It is suitable for bedrooms, living rooms and offices. 【Large amount of bubbles】 Although the volume is not large, there are a lot of bubbles. High density and fine bubbles allow water to dissolve more oxygen. The silent copper movement specially designed for oxygen pumps is more suitable for the survival of fish. 【Micro Design】 Compact and mini design makes the air pump aquarium air stone lightweight to carry outdoors, also occupies the least space and is suitable for small tabletop aquariums. 【Suitable for many occasions】 Suitable for outdoor