As quiet as nature breeze: Features brushless motor for quite operation at 45dB. Stepless wind speed adjustment: Enjoy seamless experience and powerful flow all at you fingertips. (18-34 km/h 11.2-21.1 mph) Intuitive LCD display: Keeps your update with the wind speed and the remaining battery power. 3600mAh large capacity: Ensures extended runtime for all day use. Single knob for easy operation: Short press the control knob to turn on/off fan, long press the control knob to turn on/off night light. NITECORE NEF03 Portable Handheld Fan