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. Not only does the rechargeable mini fan keep you cool, but it also does so quietly thanks to its low fan noise level as low as 34dB(A), so you can use it while you work or while you sleep. It also features a built-in aroma pad which can be used with your favourite aromas to relieve stress. Simply add a few drops of your favourite essential oil to the cotton pad fitted into the front fan guard. Beat the summer heat by infusing the natural breeze with a relaxing scent, or use an insect-repelling scent and sleep soundly all night. The Built-in high-capacity battery has a long life and can be freely switched to plug-in or for wireless use on different occasions. The mesh grid makes airflow even and concentrated and improves ventilation efficiency. The fine mesh grid can also protect your children from potential injuries, making it safer to use in the home.