Features: LED Display: This mini USB fan has a built-in 4000mAh battery and a digital display showing real-time battery percentage, which really helps you save charging energy and keep everything under-control. The mini fan comes with a base, which can be used as a mobile phone stand and desktop, free your hands, and give it to you who love watching dramas. Silent-Operation: The personal-fan adopts a strong power brushless motor, the speed is gentle, the resistances is reduced, it is very quiet during use, and will not affect your sleep or anyone around you USB Charging: This fan has a USB charging port, which can be charged by USB chargers, laptops, computers, power banks, and other devices. Powerful & Energy-efficient: Personal-Handheld Fan features a high-performance motor and optimized air-duct to improve wind power while minimizing noise. Compared to other handheld fans, it has a fast speed and stronger-wind. PERFECT-SUMMER TRAVEL ESSENTIAL: This fan is in small size, so you can carry it in your pocket or bag and enjoy a cool breezes anytime, anywhere. This portable fan is a perfect present for girls and boys. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Input: 5v2A Battery capacity: 4000mAh Product size: 145x59x66mm Wind speed: 100 levels Wind speed: 12m/s Package List: 1X Fan