General description The Portable 4200mAh USB Fan is a versatile 3-in-1 device that can be used as a handheld fan, neck fan, or desk fan. Its foldable design allows for easy portability and a stable base enables 90° vertical adjustment for optimal airflow. This fan is perfect for summer use, whether at home, in the office, or on the go. Technical specifications Battery capacity: 4200 mAh Weight: 190 g (0.42 lb) Noise level: less than 15 dB Charging time: 3 hours via USB-C Operating time: up to 20 hours at the lowest speed, more than 10 hours at the highest speed Usage 5 adjustable speeds: gentle breeze, natural breeze, refreshing breeze, strong breeze, air circulation mode LED display shows battery status and wind speed Includes a scent compartment for perfumes or essential oils Other information Ideal for summer, enhancing skincare or makeup routines, and promoting relaxation Includes a lanyard for easy attachment to bags or backpacks