SAVFY Mini Desktop Portable Rechargeable Battery 3 Speed USB Fan Cooler with USB Charging Cable-Sky Blue Power : USB or Rechargeable Li-ion 18650 3.7V (INCLUDED) Ultra lightweight Handheld Mini Fan Durable soft fan blades make you free of injury.Doesn't put the fingers into fan blades The fan can be used as power bank to charger your phone 100% Brand new and high quality