Roadacc (TM) Mini Portable Rechargeable Electric Fan With 2 Modes Speed Adjustable--Double Blades Mini Desktop Fan (Black) 45 Degree Angle Adjustable blow direction: the fan can be adjusted from 0 to 45 vertically. Dural-motor: two fan blades rotate in opposite directions driven by different motors to produce strong blow and low noise. Low-noise: motors work very quietly, and the noise is produced from the blow below 40dB as quiet as in a library environment. 2 Modes: Adjustable blow strength: a switch is designed for adjusting blow strength at two levels(0-stop, 1-weak, 2-strong). Light weight: Easy to carry: the size is very small and the weight is only 6 ounce. It's easy to carry by one hand.