1. [Safe and Reliable] Clip fans usually have protection functions, specialized overheat protection, and anti-pinch finger design (gap less than 5.4 mm). This makes it more assured to use, especially when there are teenagers or pets at home. There is soft anti-pinch cotton on the inside of the clip, which is safer and non-slip when clipped in the clip. 2. [USB or Rechargeable Battery Powered]: This 7-inch clip fan has dual power sources: battery powered and USB! The rechargeable fan has a built-in upgraded 3000mAh battery for a long working time. Portable fan suitable for bedroom, desktop, stroller, golf cart, camping and travel (Speed 1: 16 hours; Speed 2: 9 hours; Speed 3: 4 hours.) You can also plug it into the power supply to work continuously. 3. [Strong Wind and Super Quiet]: Unique upgraded blade design, 25% noise reduction. The minimum noise of this table fan is close to 25db. This mini fan is quiet enough, but still powerful enough to bring a cool breeze and bring you a comfortable working environment. It is a perfect choice for use while working and studying. 4. [Flexible Adjustment] Mini size, 720° rotation design - 360° horizontal rotation and 360° vertical rotation, you can always find your favorite angle to enjoy the comfortable wind. The mini fan is only 5.112.957.09 inches and 0.58 pounds, which is not only easy to carry but also saves space 5. [Fast Charging] This battery fan supports 5V-2A fast charging and can be fully charged in 4.5 hours. Equipped with a USB Type-c charging port, the USB fan's charging port is compatible with a variety of devices, including laptops, mobile phone adapters, mobile power supplies, and USB chargers.