Solar Power: The exhaust fan uses the solar panel as the power source, equipped with a standard USB voltage regulator to keep the output, it can be used outdoors anytime, anywhere, convenient and fast. High conversion efficiency: The efficiency of single crystal solar cells is up to 20%. Outdoor solar panels can effectively convert sunlight into electricity. IP65 Waterproof: Solar panel adopts epoxy resin laminated , IP65 waterproof can adapt to harsh outdoor environment, improve durability. the odor: This portable exhaust fan can help you maintain the indoor air flow effectively, keeping the air clean can help you the smell of pets, tobacco, etc. Wide range of applications: Suitable for kitchens, greenhouses, pet houses, chicken houses, tree houses and RV, etc., maintaining comfortable temperature levels. Item Type: Solar Panel Exhaust Fan Panel size: . 160 x 165mm / 6.3 x 6.5in Exhaust Fan Size: . 120 x 120mm / 4.7 x 4.7in Output interface: USB plus DC Colour: black Material: