80mm Ball Bearing Fan - Outstanding Long Life of 80,000 Hours - Provides Good Air Ventilation - Type: Ball-bearing - Input: 12V DC - MTBF: 80,000 hrs (25 deg.C) - RPM: 3200 +/-10% The DD-Fan80 industrial ball bearing fan cools system down with high efficiency and high MTBF for long lasting operation. For system that produces more heat, extra cooling ensures longer system life and better performance.