JJF Fn-03 Portable Desktop Fanhandheld Humidifier Fan USB or Rechargeable 18650 Battery Powered, up to 10 Hours of Operation When Full Charged, 3-speed, USB Battery Powered Cooling Table Desk Desktop Personal Fan Breeze Natual Big Powerful Wind Mute Quiet for Indoor Outdoor Home Office Dorm Dormitory Travel Hiking Camping Backpacking Climbing Boating Picnic (black) Portable mini fan powered by Premium Samsung 2600mAh lithium rechargeable battery (much safe and efficent), convenient to carry anywhere and anytime. 100% pure copper brushless motor makes F95B fan working 10000 Hours lifetime, 3150RPM/min (other USB fan is below 2000RPM/min), high energy conservation. Different ways to charge fan with lithium battery in: connect micro USB charging cable via computer/notebook, car charger, power bank, 5V wall USB charger, 5v solar charger etc. 3 settings of the air flow speed: high, mid and low. Upon your choice, the fan works from 2.7-10.8 hours after fully charged. One Led lamp designed on side. JJF new design, exclusive sale.Superior Quality: Premium Samsung cell, cutting-edge circuitry and a sturdy gloss ABS plastic exterior ensure reliability and safety.