Design of double lens, high-definition transparent anti-fog and endoscopic anti-fog ultraviolet, the lens can be opened when pulled down sunglasses, push-on shrinkable endoscopes. Hidden noise Reducing mice. traditional mobile phone middleheads can be used when riding. Very noisy, to solve this problem electronic noise Reduction technology is used in the midwifery. 100 yards ride without noise, the midwives are hidden inside the helmet, high sensitivity full copper pointing is used . Microphone, make sure the call is clear. Surface lift switch, Red button at chin, press up open and turn into a half helmet. Reflective design behind helmet, warning rear vehicles at night. Charging wire, fast charging plug, about 1 hour. full of power off, do not last long charging, charging wire, no charging head. The charging head can be a plug for your mobile phone. 6-segment bolt, multistage safety buckle, adjustable helmets are tight to wear. Specification: Material: ABS. Color: As the pictures show. Size(head circumference): L(59-60cm), XL(61-62cm), XXL(63-64cm). Package Included: 1 X Motorcycle Helmet