Features:1. With 2 speed settings, select your level of comfort with high or low airflow.2. Soft wind makes you sleep sweetly. Very low noise and long service time. 3. Small personal desk USB fan offers cool wind for you in hot days.4. Fast charging by computer, power bank or other power source by using a USB port.5. Perfect for personal cooling and use on a table or desk. Great for office table use and bedroom cooling.Specification:Material: ABSUSB Cable Length: about 150cm/59.06inMotor speed: maximum wind power: about 3,500 rpm, minimum wind power: about 2,500 rpmWeight: about 400g/14.11ozColor: Blue, White, Purple, Yellow, Black(optional)Package List:1 * Fan1 * Charging Cable1 * English ManualNote: Battery is not included. If there is no battery, the fan speed can't adjust.