1.[INSTANT COOLING ANYWHERE] - Experience rapid relief from the heat with our neck ac fan. Featuring an upgraded back air outlet for 3D airflow, enjoy a refreshing blast of cold air to both your face and back simultaneously. Stay cool in the scorching summer heat, whether you're at work, exercising outdoors, or simply relaxing at home. With the extra-large semiconductor refrigeration plate(Twice the area of other fan), feel the temperature drop within seconds for immediate comfort and relief. 2.[POWERFUL SURROUND COOLING ]- Wearable air conditioner features advanced NTC chip to instantly lower the temperature by 30°F in just 1 second. Superconducting aluminum cooling efficiency is 2.6 times higher than conventional aluminum. Equipped with 4 powerful turbo motors,achieving true 3D airflow. 5 levels of refrigeration and wind speed,you can adjust the settings to suit your preferences.Plus, the LED display provides clear visibility of the current settings / remaining battery level. 3.[PORTABLE & ADJUSTABLE] - and comfortable to wear, our neck fan is perfect for on-the-go cooling. The adjustable neck width ensures a snug fit for everyone, while the compact size makes it easy to carry in your backpack wherever you go.Bladeless neck fan keeps you away from the risk of your hair caught. Whether you're commuting, traveling, our fan keeps you cool and comfortable. . 4.[LONG-LASTING PERFORMANCE] - Powerful 4000mAh battery, our neck fan provides 3-6 hours of continuous cooling on a single charge. Whether you're out for a hike, working, or lounging at home, it ensures you stay comfortable & refreshed throughout the day. Enjoy whisper-quiet cooling without any distraction. Our advanced motor ensures silent operation, allowing you to focus on your tasks or relaxation without annoying noise. Fully charged in just 2 hours via Type-C charging.