【Ultra Quiet Fan】The blade design of this small desk fan has been improved with new technology and high-quality ABS. So our table fan has improved the sound 25% quieter than others. The minimum noise is close to 25dB and the maximum noise is less than 50dB. This mini fan is quite quiet but still powerful for a cool breeze and makes you feel comfortable. It is suitable for you to work, study and sleep. 【4 Speed Airflow】 There are 4 airflow modes that can be adjusted by pressing the Switch button, Speed 1: Light wind 2.2m/s, Speed 2: Cool wind 3.2m/s, Speed 3: Strong wind 3.7m/s. Speed 4: Super strong wind 4.3m/s. You have more choices for the speed according to your needs. No matter what fan speed, you can turn off the fan by long pressing the Switch button for 2 seconds. 【Classic Appearance & Compact Size】Vankarr upgraded small portable fan is designed with a lighter and thinner mini size, weighs only 0.36 lb, also features a convenient foldable design for easy storage, making it