Features: 1.HIGH QUALITY: This little fan made by premium materials steady frame durable and long lasting.2.DESIGN: High speed low noise motor design makes this mini personal fan an ultra-quiet fan You only get the cool breeze; there is no room for noise. 3.PORTABLE LIGHTWEIGHT DESIGN:When you go outside you can put it in the bag with you especially suitable for summer travel or outdoor sports you can take it to anywhere.4.QUICK COOL DOWN:Strong power ensure maximun air flow.because this fan can cool you down It s a must-have for the summer.5.USB POWERED - With a feature of this USB powered function so to make this little fan work like an air-conditioner all you need to do is to plug connection into any devices with USB charging port like computer laptop portable charger or other devices. Specifications:Wind speed: 3 speedsNoise:37-45dB Rated voltage;5V Rated power:5V Rated frequency:5V Whether built-in battery:Removable and replaceable battery Built-in battery capacity:1000mA-1200mA