Green Moby GF11BLU Bladeless Desktop Designer Fan in Blue This Green Moby Bladeless Desktop Designer Fan stands 8.5 inches tall. The opening where the breeze comes Comfortable Breeze is generated by a motore&#47;turbine for consistent and steady airflow compared to This fan can be powered USB&#44; or be plugged into a normal wall socket with a adapter. Use with a 1000mAh Adapter Sold Seperately. The sound level is each individually tested to be under 55 decibel.