[Smart Display & Adjustable Speed]The neck fan features an LED screen that shows battery capacity and 5 wind speed levels, making it convenient and smart to operate. [Long-lasting Battery & Fast Charging]Equipped with a 2400mAh large capacity battery, it provides 5-20 hours of working time depending on the speed setting, and fully charges in just 3-4 hours. [Ultra-quiet Noise Reduction Technology]Core noise reduction technology ensures near-silent operation at just 15dB, even at the highest setting, while boosting cooling efficiency by 300%. [ & Portable Design] the and compact fan is easy to carry and 't cause fatigue even after long periods of wear. [All-around Adjustable Cooling System]The fan's dual- memory adjustment allows for 180° angle customization, and the 360° surrounding cool air design ensures instant, full-body cooling using advanced German ice porcelain cooling technology. Gear: 5th gear Battery:2400mAh Function:digital display battery , ice porcelain body feel cooling