12V fan: Bearing: ball or sleeve Voltage: 5/12/24 V Current: 0.13-.0.30A Power: 1.5-2.8 W Speed: 3500-5100 RPM Air Flw: 22 cFM Presssure: 1.95-3.54 mmH2O Noise: 27.13-31.77 dB(A) Weight: 12g Certification: UL/CE/ROHS Special function: Temp. control, anti-fire, Auto-start, LED, waterproof.