Super quiet: the table fan works surprisingly quietly. It won't bother you at all when you work or sleep, but gives you exactly the amount of air you need. Rotating desktop fan: with 180 rotation and 2 adjustable wind speeds to keep you cool. A must for household, office and outdoor equipment in hot summer. USB fan: the USB desk fan is energy-saving and environmentally friendly. Charging via computer, laptop, power bank, USB charger, mobile phone adapter, car charger, etc. The battery is not included. Compact and portable: the USB fan is small, lightweight, portable and handy. It fits in any room corner without taking up too much space. And it protects the little curious fingers from injuries caused by the moving fan blade with narrow gap dimensions. Wide application: the mini USB desk fan lets you have another cool summer. Perfect for use at home, car, office, desk, camping, travelling or any outdoor activities.