Feature:【Solar Power】 External panel ensures fast charging, ideal for emergencies without a power source. Keeps your car cool and powered up.【Eco-Friendly】 Silently refreshes your vehicle, removing heat and odors, and replacing them with cool, fresh air using solar energy.【Dual Control】Offers flexibility with a dual solar and battery switch, allowing either source to operate independently for convenience.【Easy Installation】 Installs in seconds on any car window, ensuring secure charging even in rainy weather without complex tools.【Efficient Cooling】 Designed to fit atop car windows, this solar fan vents hot air out, cooling the interior efficiently in hot weather.Specification:Power: 10wColour: WhiteNet Weight: 411gSolar Panel Voltage: 3.5v/300maSolar Panel Size: 110 * 60mmDuration: 20hCharging Time In The Sun: 2hShell Material: ABSFan Mode: I Is For Solar Control,Ii Is For Shutdown, And Iii Is For Battery ControlInstallation Instruction:Roll down the front or rear window on your car about 4-5 inchesChip the auto vent cooler deluxe onto the windowNext size the weather stripping fit in both ends of the auto vent cooler deluxe.Slide the remaining weather stripping onto the opposite side of the window andwork your way to the auto vent cooler deluxeSlowly Roll the window closedPackage Content:1 Exhaust Fan