Ergonomic Neck Support Upgrade: Comfort-fit neck curve design more comfortable to use after long-term wear. Large battery capacity:5000mAh Fast Charge (4H Full) All-Day Cooling (16.5H Max) Cool down quickly5-Speed Turbo Cooling and 80 Airflow Channels, which can achieve a 360° omnidirectional air outlet and cooling. Ultra-comfort and safe: The 9.8oz hands-free design stays comfortable for all-day wear and no hair pulling. Multi-scenario use: Suitable for people of all ages, suitable for various scenarios such as work, office, sports, travel, etc.