1. Exclusive 2-in-1 design with USB and micro USB (otg) ports
2. TPE soft fan blade 89mm long
3. Strong wind and low noise below 30dB
4. Working as USB fan on power bank,tablet,laptop etc
New USB & Micro USB Portable Fan super Portable and low power consumption. Soft material so no chance of accidental hurtingWorks with USB or micro USB of phones with OTG support and 5pin type. You can use with power banks, smartphones, or any other USB power source.