Battery Powered Fans with Strong Wind & Whisper-Quiet Operation Stay cool anywhere with Minlebao portable fan, featuring 4 adjustable wind speeds to suit your needs, whether at home or outdoors. Designed with an advanced brushless motor and upgraded fan blades, it delivers powerful airflow with ultra-low noise ( 20dB), ensuring a peaceful and refreshing experience while you sleep, work, or camp. Super Durable Rechargeable Battery for Long-Lasting Use This portable fan rechargeable features a high-capacity internal battery, fully charged in just 3-5 hours via the convenient Type-C cable. Enjoy up to 30 hours of cooling power in different modes, ensuring a refreshing and uninterrupted sleep. Plus, with the USB-A port, this rechargeable battery fan doubles as an emergency power source to charge your phone or GPS, giving you peace of mind during outdoor adventures, so you never have to worry about losing power on the go. High-Brightness Camping Lantern for Nighttime Adventures