Specifications:

Model: SFF21D
Fan Size: 120mm x 120mm x 25mm
Speed: 800 RPM
Airflow: 33.5 CFM
Noise: 8.7 dBA
Bearing: S-FDB* (Sony patent pending Fluid Dynamic Bearing)
Voltage: 12 V
Current: .10 Amp
Fan Life: 150,000 hours
Connector: 3pin (length: 30cm) with 3pin to 4pin connector w/ separate RPM
Fan Screws: 4 fan screws included
*S-FLEX™ is registered trademark of SONY Corp.

Description:

The 120mm S-FLEX™ series from Scythe utilizes Sony's Fluid Dynamic Bearings to create a high quality fan with an incredible noise to CFM ratio.  At only 8.7 dBA, the Scythe SFF21E (12000 rpm model) pushes an astounding 33.5 CFM!  Innovations such as the S-FDB technology, additional suction magnet, and linear drive IC all contribute in eliminating noise and wear, drastically extending the life of the fan up to 3 times the amount of conventional ball bearing fans.  The 120mm SFF21D S-FLEX™ fan from Scythe is great for any application; whether its mounting on a heatsink or mounting inside your case, this fan provides great airflow at nearly inaudible noise levels satisfying even the most demanding noise critic.

Features:

• Equipped with Genuine S-FDB* Bearing: This fan is equipped with genuine S-FDB (SONY Fluid Dynamic Bearing) made by SONY corporation.
• Market Leading Low-Noise Level: S-FDB technology drastically eliminates the friction between the bearing and the shaft which makes this fan nearly inaudible to human ears. Additional suction magnet optimizes the magnetic force balance within the rotor to achieve the absolute silence. To further achieve the absolute silence, the fan is equipped with the Linear drive IC for reducing electromagnetic noise.
• Outstanding Long Life of 150000 Hours: Patent Pending "S-FDB" structure allows the fan to last up to 150000 hours.
• Anti-Shock Ability: Conventional ball bearing carries a point contacting structure for the rotation, which gives point supporting situations at dropping impact to damage ball bearing surface which could cause irregular noises. The S-FDB carries a surface contact mechanism for improved anti-shock structure, which is 5 times stronger than the conventional ball bearing