Features 25w Solar Power Supply: This Solar Fan Uses A 25w Large Capacity Solar Panel, Which Is Powerful Enough Compared to Other 15w Or 20w Solar Fans. Prepare A Good Solar Fan for Your Cute Plants Or Pets. Green Energy, Green Earth. 3500 Rpm High Speed Fans: Some Solar Fans Are Too Weak for Air Circulation, Especially During Very Hot Summers. Therefore, We Increased The Speed of These Two Fast Speed Fans to 3500 Rpm, Which Is Strong Enough to Suck In Air Or Cool from Heat. EASY TO INSTALL: We adopt a fan integrated design with an installed front panel. Simply hanging the fan on the wall or window space, and connect the cable of the solar panel to start working, saving time and making operation easier. PREMIUM CONVERSION EFFICIENCY: The single crystal solar cell has a premium conversion efficiency of up to 20%. The solar panel of the solar fan is mainly made of single crystal silicon. The double sided metal protective net on the double fans is solid an FOR OUTDOOR AIR CIRCULATION SOLUTIONS: We know that some outdoor spaces may not have direct 110V AC power supply. Therefore, we have brought this solar fan for outdoor air circulation, which is very suitable for outdoor chicken houses, greenhouses, sheds Specification: Item Type: Solar Panel Fan Kit Material: Monocrystalline Silicon Maximum Power (pmaximum): 25W Open Circuit Voltage (VOC): 20V Maximum Power Voltage (vmpp): 18v Short Circuit Current (isc): 1.5A Maximum Power Current (impp): 1.1A Output: Dual USB, Type c, DC Package List: 1 x Solar Panel  1 x Exhaust Fan  1 x Cable  Note: 1. During use, try to avoid the solar panel being hit and squeezed by heavy objects as much as possible to avoid affecting the normal operation of the solar panel.2. After use, unplug the charging wires on the device and solar panel in a timely manner to avoid short circuits and damage.3. When using solar panels, it is recommended to choose a place nearby that is free of high buildings, trees, and other obstructions to ensure charging efficiency.4. If there is dust and dirt on the surface of the solar panel, please use a soft and clean cloth to wipe it and avoid using chemicals to avoid damaging the solar panel.5. When using ventilation fans, the general rules for using ventilation fans should be followed to avoid contact with water and other liquids to avoid short circuits.6. The solar panels have no power storage function. Package List 1 x Solar Panel 1 x Exhaust Fan 1 x Cable