Description: Material: plastic Color: green,blue,white,black Size:7*13cm/2.75*5.1inch Power supply method: USB Feature: 1.The USB-powered aquarium fan is compact in size, which helps lower the aquarium temperature and effectively reduces the health risks caused by fish stress and overheating. Even in the hot summer, it can provide a comfortable and stable environment for fish. 2.The cooling fan powered by USB can easily switch the air volume and be easily selected as needed. The fan series can effectively prevent the water temperature from rising. 3.The aquarium cooling fan adopts a low-noise design, providing a comfortable living environment for both humans and fish. Supports USB interface, facilitating power supply via PC or power bank. In addition, the air effect on the water can increase the oxygen content in the water. 4.Just tighten it onto the aquarium. The design is easy to install and disassemble 5.It is not only suitable for aquariums but also for multiple pets: it can also be used to adjust the water temperature of freshwater and saltwater tanks, as well as in cat bedrooms, hamster cages, reptile breeding boxes, dog cages, etc. It provides a comfortable cooling experience through gentle air and is an ideal choice for keeping pets warm Note: 1. Based on actual usage effect. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package included: 1 *Fish tank and turtle tank cooling fan