(1) Mini size: 33*9*10cm (2)Unit weight: 300g (3) 2.5W, 3 speeds, (4) USB connection with laptop (5) Anion function Feature::1) Power supply: can use USB line & 3AA batteries2) Power: 2.5W, 500 mA, DC:5V3) Material: ABS 4) With 3 button function:(on/off, speed, LED) . 3 speeds, low, medium and high, press the spreed to change,an LED light will show the current speed 5) With common motor.6)The ...