[Professional camping equipment]- Unlike other portable fans on the market, this camp fan comes with an internal sun fan and a 10400mAh rechargeable battery. It is suitable for a carbon - lifestyle. You don't have to worry about the end of power even when you're out. It can work for 9-36 hours by providing long-term coolness.. [Efficient Solar Panel]- The solar panel is made of monocrystalline silicone and uses sunlight to generate electricity. In bright light conditions, it takes only a few hours to charge the 10400mAh camp fan completely. This solar energy also supports charging and use at the same time! 4 wind speed is available. Let the wind fly your concerns! It is an ideal light source for night camp or walking. The four-time control time of 2-4-8 hours and the four-setable wind speed can meet your needs in different situations. Take it with you to explore the world !. [Robust and durable]- Travel tent fan body is made of solid ABS material to protect against severe blows. In general, compact and easy to move. You can put it in your backpack if not used and the compact weight will not be a load. Ideal for travel, fishing, camping and construction site.