Dual turbo fans are six,The upgraded powerful motor keeps quiet while ensuring,Greater wind power, increased heat dissipation rate Knob to freely adjust the wind speed,Adopt knob design, the wind speed can be adjusted, low wind speed is suitable for daily office work, high wind speed is suitable for playing games! Strong compatibility,Fully compatible with mainstream notebook models on the market, solving the problem of size mismatch after purchase Radiator = Heightening bracket,Carefully designed 4-position locking position to protect your cervical spine health Good material for heat dissipation,Thickened metal mesh increases heat dissipation while increasing,Longer product life Product name: Laptop Cooling Fan Product Size: 350x250x 27mm Working current: 0.22A Operating Voltage: USB5VDC Colour: B As Shown Material:Metal+ABS Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Laptop Cooler Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.