The Portable Water Tank Fan is a must-have accessory for patio and industrial use, providing efficient cooling and sanitation in open spaces. This fan boasts three adjustable speeds, ensuring that you can find the perfect airflow to suit your needs. Its large 71cm high-performance air cooler is 100% waterproof, ensuring that it can withstand harsh outdoor conditions, even in the rainiest of climates. The built-in pump can be used to cool down water tanks, preventing microbial growth and extending the lifespan of the tank. The machine is energy-efficient and designed for long-term durability, making it an ideal choice for both residential and commercial use.