This portable fan is a new version of the classic JISULIFE NECK FAN with a new necksupport that conforms to the curve of the human neck. It effectively prevents the sticky and stuffy feeling after long-term wear, making it more comfortable to use. Newly upgraded 5 wind gears, keeping you cool at all times. 2 air inlets and 80 air outlets, and the necksupport provides a larger airflow space, achieving true 360 rapid cooling. The portable neck fan is equipped with a 5000mAh battery, which can be used continuously for 2.5-16.5 hours according to adjusting different wind speeds. It only takes 3-4 hours to charge from 0% to full, allowing you to enjoy the coolness all day long. The personal fan working noise is less than 25 dB, so it won't be embarrassing even if used in a library. The upgraded overall design is also safer, not prone to slipping on the neck, and doesn't trap hair. The classic style JISULIFE NECK FAN is popular worldwide, and this upgraded version will bring a new trend for the summer. It's suitable for personal cooling for people of all ages, whether in school, office, church, gym, or outdoor activities such as camping, traveling, hiking, climbing, watching sports games.