【Intelligent Digital Display & 5-Speed Adjustable Fan Speed】: Our desk fan features an advanced intelligent display that shows the precise airflow percentage (1-100%) in real-time. Innovative dual-control functionality allows for effortless operation: a short press of the up and down arrows activates 5 preset fan speed levels (1%, 25%, 50%, 75%, 100%). Thanks to the brushless motor, a long press of the arrows seamlessly transitions to stepless speed control, allowing you to precisely adjust the airflow within the 1-100% range. 【USB Power & Long Battery Life】: Our USB fan offers flexible USB power options, allowing for easy connection to devices such as computers, power banks, and USB wall outlets. Additionally, the fan is equipped with a high-capacity 5400mAh battery. When charging via USB, adapter specifications must meet the following requirements: ≤ 5V, ≤ 2A (max), and ≤ 6.5W. Using high-power chargers (such as 9V/12V) may cause inaccurate charging display readings and accelerate battery discharge. The convenience of the USB interface and long battery life ensure continuous airflow. No need for frequent charging; this desk fan will keep you cool all summer long! 【90° 3D Air Circulation】: The manually adjustable 90° tilt angle provides unparalleled comfort: you can precisely direct the airflow where you need it most. 3D circulation technology creates a balanced airflow pattern that evenly cools the entire room. Whether you're working at your desk, relaxing in bed, or quietly reading, this rechargeable fan's adjustable design and intelligent airflow ensure a consistently pleasant temperature. 【Quiet Desk Fan】: Our quiet turbine fan features a unique dual-helix blade design that ensures powerful airflow while keeping noise levels below 35 decibels. Enjoy coolness in peace and quiet. This innovative design maximizes airflow efficiency while ensuring silent operation. Therefore, this fan – also ideal for bedrooms – is perfect for various occasions such as studying, reading, working, sleeping, yoga, etc. 【Portable Design & Multiple Installation Options】: Our portable fan is compact and lightweight, making it easy to carry. It offers multiple installation options and flexible placement possibilities: you can hang it on a hook to save space, place it securely on a table, or attach it to a smooth surface like tiles or glass. Whether it's a camping trip, a yoga class, kitchen chores, or a cozy evening in the bedroom, this fan can meet all your needs, allowing you to enjoy cool comfort anytime, anywhere.