Special function: Auto star, LED, ALARM, PWM control Bearing type: sleeve, ball, ball+sleeve, hysint Voltage: 12 V Current: 0.07A~0.22A Power:0.8W~2.6W Speed:2000~3000 Air flow:4.35 CFM~6.92CFM Pressure:5.17mmH2O~11.75mmH2O Noise:24.60dB~36.91dB Weight:115g