✔ Air volume level 3: weak wind ＞ natural wind ＞ strong wind,360-degree refreshing experience. ✔ The neck fan has 72 ventilation holes that keep the face cool and can keep the makeup. It can be used safely by children and adults. ✔ Neck Fan can be freely adjusted in size, suitable for users with various neck sizes, and it is super quiet to use. ✔ Wingless design, you don't have to worry about hair being caught by fan blades. ✔ Brand new upgrade,Equipped with 4000 mAh battery,so that the maximum continuous use time can reach 16 hours. ✔ Half-closed air inlet, dust and sweat proof. ✔ Personal neck fan is made of food-grade TPE material,More comfortable, gentle and not hurting the skin. ✔ Wide range of applications: Use for both indoor and outdoor activities, office, subway, traveling, camping, picnic, hiking. A total of 72 air outlets on both sides and back of the neck, 360° all-round heat dissipation experience 4000mAh large capacity batteries provide 3-24 working hours duration (depending on the use of scenarios and gears). Lighter weight means more convenient to carry, and will not burden the neck. Effectively handle and reduce noise(<20dB), thereby increasing wind power and use time. Package 1x Bladeless neck fan 1x USB charging cable 1x Instruction manual