SPECIFICATIONS Power Source: usb Rotation Way: Without Rotation Brand Name: other Model Number: A1102 Material: Plastic Max. Power: <20W Usage: Home Application: <10㎡ Size: <1050MM Remote Control Function: No Air supply mode: Rotary Vane Fan Speed: Third Gear Water-shortage Power-off Protection: No Wind Type: Natural Wind, Sleep Wind, Prevailing Wind Voltage (V): 5V Max. Timing Limit: No Timing Technology: Other Controlling Mode: Mechanical Timer Control Installation: Mini Origin: Mainland China Certification: CE Power (W): 3W Timing Function: No Timing Power Source: Battery Choice: yes