Clip on Mini Desk Fan, GS Rechargeable Battery Operated Cooling USB Fan, 360&deg;Rotation, Adjustable Speeds,Small Portable Stroller Fan for Baby, Car Seat, Gym, Travel, Treadmill (Black) USB OR BATTERY POWERED & UNIVERSAL COMPATIBILITYThe rechargeable fan is powered by an USB cable (6.5ft), or by a rechargeable 2200mAh lithium battery(included).the personal fan can run permanently using a micro USB cord CLIP ON FAN & DESK FAN IN ONECan be put on the table or Clip on anywhere you want, ideal for baby stroller, home and office, laptop, gym workout, car backseat, outdoors, camping, trips and anywhere need cool wind ADJUSTABLE SPEEDSThe small USB table fan can provide adjustable speeds according to your demands,the mini fan is compatible with computers, laptops, portable chargers and other devices with USB output ENHANCED CLAMPTo offer the best clip fan, we have made many tests to ensure the clamp was strong enough to clip and stay put, even on a moving baby stroller ENSUREHassle-free exchange, return and refund. If not satisfied, please contact seller before you leave a negative feedback or review