dizauL Portable Fan, Mini USB Rechargeable Fan with 2600mAh Battery Operated and Flash Light,for Traveling,Fishing,Camping,Hiking,Backpacking,BBQ,Baby Stroller,Picnic,Biking,Boating (Black) 2600mAh Battery: Compatible with Smartphones, Android, Samsung, Digital Cameras, GPS, Tablets, MP3 and MP4 player, Come with a bright white LED light on one side for illumination use. Mini 4 inch design, easy to carry, just throw into your bag or use the carabiner to hang. Battery type: Premium 18650 cell lithium battery (much safe and efficent). Charged Method: Connect Micro USB Cable to PC / Notebook, power bank, car charger, 5V DC wall charger 5v solar charger etc. Using the brushless motor industrial grade fans, high winds and long life have adequate safeguards. Three speed level to choose, Upon your choice, the fan works from 3.0-6.0 hours after fully charged.