[Silent Design]40-50db low noise, no worrying disturbing your sleep. Portable, easy to carry and comfortable to use, doesn't occupy your home space.[Power Source] Storage battery, DC12V (Direct Current).This solar ceiling fan with on/off switch,it also can directly connect with solar panel,but with solar charge controller will be stable.Reduce carbon emissions and protect the earth.[Power Cord Length] 2.5m/ 98.4in, Fan diameter : 500mm/ 19.7inch, Blade length: 200mm/7.87inch[Ceiling Fans Has Widely Usage]: When travel on camping, tent, sailboat, motor home, and street vendors, hanging the portable ceiling fans to cool down. On the top of your lunch table of your yard, can help expulsion the flies, mosquitoes.Colour: whiteMaterial: ABSPackage Contents:1 x electric fan1 x ribbonOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.