Description: 【Efficient Cooling System】: This cooling fan is effectively reducing heat transfer from equipment and maintaining optimal water temperatures, designed for water volume under 20 liters, this fan can effectively the water temperature by approximately 24 Celsius depending on ambient conditions 【Double Speed Settings】: This Chiller with two adjustable speed settings, allows you to customize the according to your specific cooling needs, ensuring a comfortable environment for your aquatic life 【Material】: Made from pp , this Fish Tank Cooling Fan is designed for durability and longevity, providing reliable performance in various conditions 【Compact Size】: This Small Fish Tank Fan is 7cmx3cmx12.5cm/2.76inchx1.18inchx4.92inch, compact enough to fit seamlessly into your setup without taking up much space 【Adjustable Clip Design】: The fan features an adjustable clamp that can accommodate surface under 8 mm/0.31inch thick, ensuring a for various tank setups.Equipped with both a US plug and USB power cable for versatile connectivity Specification: E : DC 5V Power : 3.8W Note】: This fan is not waterproof; ensure it remains dry and avoid submerging it in water Size Chart: 7cmx3cmx12.5cm/2.76inchx1.18inchx4.92inch Package Includes: 1 Chiller Fan 1 Power Cord 1 US Plug Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.