COF Costa Mini Wireless USB Desktop Fan, 3 Speed USB Summer Cooler Fan with LED Light, PC Cooling Table Fan, Portable Handheld Rechargeable Fan (Blue) Handheld palm size Fan powered via a rechargeable battery (included), 3 gear speed plus a LED light, adjusting to a suitable air volume for perfect seaming A portable fan with intelligent control system and reliable performance--made of top quality ABS, Standard 18650 3.7V lithium battery last longer time and strong power output perfect for your office, dorm, home Using USB cable and simply plug into a laptop to charge the Fan or 5V wall USB charger, car charger, power bank. Without battery, the Fan is still working when connected to powerbank or PC via USB cable Ideal company for camping or any outdoor activities, Good Mini gear for fishing in summer time No More Heatwave