[Ultra-silent Operation] UBIUO USB fan uses high-quality silent bearingsproviding comforting wind while keeping quiet, 3 adjustable speeds with the minimum noise of 22 dB (almost equivalent to falling leaves). Enjoy the cool breeze without being disturbed.[Exquisite Body Design] Lightweight design, 360 free rotation, blowing breeze from any direction, comes with a removable handle and uni-body sturdy stand. Suitable for desk, travel, office and room household.[Adjustable Fan Speed] Lightly press the power button to switch between three modes: low / medium /high. Have more choices under different environments and different temperatures. Bringing the most personalized user experience for you.[USB Powered Battery] The fan is equipped with a Micro-USB port for power supply and charging, Built-in high quality 2000 mAh battery can last up to 5 hours after fully charged. which is convenient to use without worrying about cables.[Power-Saving Technology] Compared with air conditioners and other tower fans, our fans are more power-efficient and energy-saving. It is also more health-friendly since our fans can circulate the airflow of your room.