The Xiaomi Rechargeable Mini Fan allows you to keep cool while on the go. It features a high-performance brushless DC motor with 4 wind speeds and a wide-angle airflow for ventilation. Its nature-inspired 7-blade fan provides a cool and comfortable natural breeze to keep you cool on those hot days. This wireless mini fan also comes with a built-in 4000mAh rechargeable battery to allow you wireless usage of up to 18.5 hours on the first wind speed. The fan also offers 90° vertical and horizontal oscillation to let the cool wind reach every corner of your desk.