Size: 40x40x10mm Frame: plastic Impeller: plastic p. B. T. Voltage: 5v, 12v, 24v Current: 0.04-0.18a Power: 0.45-1.44w Speed: 4400-7700rpm Air flow: 4.3-7.6cfm Pressure: 1.9-6.1(mmh2o) Noise: 22-37dba Bear type: sleeve, ball Weight: 16g Motor: brushless dc, auto restart impedance & polarity protected Operation temperature: -20 c~80 c Insulation resistance: 10m at 500vdc between lead and frame Dielectric strength: 1 min at 500vac/50-60hz, current min 5ma Operation humidity: 20%~85% Working voltage: rated voltage15% Life at 25oc: ball bearing 50, 000hr and sleeve bearing 30, 000hr