1. Small but mighty
2. Large airflow at very low noise
3. Durable dual ball bearing structure for the long-life operation of more than 50,000 hours
4. Metal fan grill on both sides to prevent damage to itself or hurting fingers
5. USB switch handy
6. Generous USB cable length for convenient use
If you are looking for specifications beyond these, we shall be happy to customize the fan material, fan speed, fan voltage, airflow, static pressure, noise level, etc.