... USB fan for PC/desktop, etc 2. Soft & safe plastic fan blades 3. Compact and portable 4. Low power consumption Ultra Silent USB Mini USB ... from a dense but pliable foam2. High-speed, USB bus powered, runs by 3 AAA batteries 3. ... current, power just 2.25W, energy saving4. USB plug and play,no external power needed5. Strong wind ... time *Pioneer seller of Alibaba Ultra Silent USB Mini USB Fan with led light