Portable Clip on Fan Battery Operated, Small Powerful 3 Speed Quiet 360degree(s) Rotate, Usb Rechargeable Mini Personal Cooling Fan for Desk Table Home.... Usb or Rechargeable Battery Operated: The clip-on fan has a 2000 mAh battery that can last from 3.5/6/10 hours(Depending on speeds), can be used while charging suit for desks, strollers, camping, car seats your beach/camping/travel essentials Strong Wind and Low Noise: Built-in powerful brushless motor, has a long service life fan blades and fan cover have been upgraded according to the principle of aerodynamics, which can support powerful airflow but also make the fan operate quietly Also Safe for Baby: The mini clip fan only has 5.5mm gaps, so it will protect the infant's little fingers from entering While keeping toddlers safe, still works quietly and provides powerful wind