Outdoor photo voltaic panels can efficiently convert sunlight into electric energy. Clean energy, long provider lifestyles and effort saving. Keeping the air clean helps to remove the heady scent of pets, tobacco, etc. Maintain a snug temperature level throughout the journey. Suitable for greenhouse, puppy house, tree home and RV etc. Precautions 1. Please don't scratch the skin of the solar panel with sharp objects. 2. When charging the charger with solar energy, please function the photo voltaic panel dealing with up in direct daylight to ensure the best charging effect. 3. Please do not put the charger in outdoor solar power for emergency charging in moist days, so as to not cause brief circuit. (The entrance of the solar panel isn't always terrified of rain (note that no water enters the USB and DC ports.) Power: 20W Fan size: 6x6 in (approx.) Material:ABS monocrystalline silicon colour:black Package Contents: 1 x Exhaust Fan 1 x Solar Panel Only the above equipment content, other products usually are not included. Note: Light shooting and different reveals could cause the color of the thing within the photograph slightly different from the genuine thing. The dimension allowed error is +/- 1-3cm.