Solar : The exhaust fan uses the solar panel as the 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 percent . Outdoor solar panels can effectively convert sunlight into . IP65 Waterproof: Solar panel adopts epoxy resin laminated surface, IP65 waterproof can adapt to harsh outdoor environment, durability. Eliminate the odor: This portable exhaust fan can help you maintain the indoor effectively, keeping the clean can help you eliminate 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: approx. 160 x 165mm or 6.3 x 6.5in Exhaust Fan Size: Approx. 120 x 120mm or 4.7 x 4.7in Output interface: USB plus DC Colour: black Material: ABSandmonocrystalline silica Package Contents: 1 x Solar panel 1 x Exhaust fan Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.