The solar panels collect the sunshine, convert it into electricity and drive the fan, thus generating a cool breeze. The fan operation is automatic, the more sunshine, the faster it goes, when in shadow, it will stop. Fit Construction workers, sanitation workers, cyclo, motorcycle drivers, firefighters and other workers in the sunshine 

• Environmental protection,energy-saving and high technology
• Beautiful outlook and modern design, durable
• When there is strong sunshine point-blank, the fan will start
• Ventilate and cooling

Specifications:

Head circumference:51-60cm
Material: ABS
Color: Yellow/Blue/Red/White

What's in the Box:
1 x Solar Safety Helmet Hard Hat