Learless Neck Hanging Fan USB Rechargeable, Silent, Large Wind Lazy Person Portable Student Quad Core Fan Features: Youth needs to be floating, fully equipped with quadcore and silent! The wind is strong! Cool and refreshing back neck True 4-core technology allows for higher wind speeds, faster , and no entanglement in the hot and stuffy hair Feeling and Gentle with Three Winds, Fresh and Natural, Fast The wind speed of the front and rear independent fans is 10 times that of the 2 fans, and they are not afraid of cost. With 4 turbine blades, they are cool and sweat free The sound of the silencing motor is as low as 20dB, not afraid of cost. Four silencing materials are used to increase the wind power by Never been so quiet, my mood is really good. is not disturbing, and I can easily use it at work Equipped with 2400mAh energy-saving lithium- battery from morning to night, the range of the battery is sufficient for one day's use without getting too hot in the sun Product Description: size：218*140*41mm / 8.58*5.51*1.61in Powerful Air Circulation: Experience optimal airflow and ventilation with our high-performance fan, designed to efficiently circulate air throughout your living space for a consistently cool and comfortable environment. Adjustable Speed Settings: Tailor the cooling experience to your preferences with our fan's variable speed settings. Choose from a range of options to find the perfect balance between gentle breezes and powerful air circulation. Compact and Portable Design: Our fan is crafted with a compact and portable design, making it easy to move and position in any room. Enjoy cooling comfort wherever you go, whether it's the bedroom, living room, or home office. Energy-Efficient Operation: Contribute to energy conservation with our fan's energy-efficient features. Enjoy a refreshing breeze while minimizing environmental impact and reducing energy consumption compared to traditional cooling methods. Easy-to-Use Controls: Simplify your cooling experience with user-friendly controls. Our fan is equipped with intuitive settings, making it accessible for users of all ages to enjoy the benefits of a well-ventilated space.