Noise Cancellation Adapter (NCA). The NCA permit user to switch between 1200RPM and 900RPM in order to reduce the noise level. Teflon Nano-Bearing Technology TNB runs more smoothly with no friction, making the fan silent, powerful and highly durable (200,000hrs)
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Price History (Excluding Tax & Combo Deals)