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Smart Bike Helmet:Cycling Helmet with DIY display.The led helmets for adults can customize the display content of the helmet through the APP/controller,adjust the brightness,display turn signals (left and right),stop instructions, and even add personalized graffiti,allowing you to show your personality in every ride Safety Protection Upgrade:Mountain bike helmet are manufactured in strict accordance with safety standards.The inside and outside of the adult bike helmet are made of EPS and CE materials,which can effectively absorb impact energy and better protect your safety Comfortable To Wear:The bicycle riding helmet is lightweight and can be adjusted to different sizes according to the head shape.The bike helmet women adult carefully designed vents can enhance airflow and keep you cool,so you won't feel stuffy and uncomfortable even if you wear it for a long time Long Battery Life:The womens bike helmet is equipped with a long-life battery,which can be charged via a USB Type-C charging cable.When fully charged,it can be used continuously for more than 12 hours,increasing your experience fun Fashionable Appearance:The bicycle helmets for men combines modern technology and fashion elements,with a simple and technological appearance,making you the focus when riding.It is a good choice to show your personality High-Definition Display:The mens bike helmet has a built-in high-quality display with clear images and bright colors.576 2121RGB lamp beads provide excellent visibility in various light conditions