Mini Cooling Clip Fan 360 Degree Rotation USB or 18650 Battery Rechargeable Powered Portable Mute Computer External Desktop Fan Pc Cooler (Yellow) International standard 18650 capacity lithium battery provides exceptionally long using time and strong power output. Using the brushless motor industrial grade fans, high winds and long life have adequate safeguards. The integration design, simple appearance, solid structure, it is realize the huge wind capacity fan portable, more confidence in the transport and using High winds and long life have adequate safeguards. Battery type: Li-ion 18650 (INCLUDED)