When you go out for traveling, hiking etc, will you worry about the hot sun? Will you want to take a fan but worry it is not so portable and may be out of electricity. The item can help you which is powered by solar and do not need any battery so it can work in the direct sun. The brighter the sunlight, the faster the fan turns. Features - Color: White. - Size: 8.7 x 7.6 x 3.5cm. - Power: Solar/DC 5V. - Material: Plastic. - Powered by solar , do not need any battery, it can work in the direct sun. - The brighter the sunlight, the faster the fan turns. - Portable, energy-saving, eye-catching and free of pollution. - Clip on visor or in the neck, it will bring you cool breeze. - USB connectivity allows you to power it from a computer or any wall socket with a USB power adapter. you can use it as a desktop fan. (Note: USB cable and mobile power doesn't include)