【Stronger Wind and More Speed】Thanks to OPOLAR's latest dynamic technology, the max. fan rotating speed arrives to 4000rpm. More airflow, but less noise. Plus it provides four gears to adjust the speeds to satisfy all your needs
【Enhanced Clamp】To 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.
【Rechargeable Battery or USB Interface As Power Supply】the mini USB fan comes with a 2200mAh lithium battery; which lasts from 2 to 8 hours depending on the wind speed. Each battery has been detected THREE TIMES to ensure the best quality before leaving factory; you can also power or charge via USB interface of computers, power banks, or USB chargers.
【2017 New Design】Comparing all the similar products in the market, we are fully confident that this would be the best design.