1. Material: PC shell + EPS liner 2. Head circumference size: 54cm-63cm adjustable 3. Support WiFi wireless connection, convenient operation, real-time viewing 4. One-piece molding, solid as a rock 5. Adopt pure cobalt battery, long service life, normal operation at sub-zero temperature, high temperature resistance 6. Front light for night riding, lighting warning is safer 7. One-button easy control of the rear warning taillight of the helmet, multiple lighting modes 8. Multi-channel airflow cooling system, optimizes and guides the cold airflow 9. Removable lining, easy to wash and keep the head clean 10. Convenient buckle is easy to wear and not easy to fall off
