Description:Higher air flow to enhance cooling performance.Dimension: 80 x 80 x 25mm / 3.15" x 3.15" x 0.98" (L*W*H)Voltage: AC 220V/240V; Rated Current: 0.07ABearing Type: Sleeve Bearing; Speed (R.P.M.): 2500 R.P.M. (+ / - 10%).Excellent performance and quality for dc cooling fan.