Hat materialcottonTypes of hatscapBattery capacityExplosion-proof lithium battery (built-in 400 mah lithium battery)Charging indicatorRed light when charging, blue light when full charge (with automatic overcharge protection function)The head weightLightness (safe and light design, beautiful and practical)Wind power generation adjustmentAdjustable (air volume is adjustable, energy storage can be used for about 5-8 hours)The fan powerWind enhancement (large wind configuration with fan blade diameter of 7CM)Suitable for gift occasionsBirthday, fishing, festival, exhibition, advertising, employee welfare, anniversary celebration, business gifts, opening ceremony, award ceremony, public relations planning