18650 lithium battery
Speed regulation method
USB Output Port: USB 2.0 port is suitable for phones, MP3, MP4 and etc.
Waterproof Surface: The solar panel is waterproof, but pay attention to the welding point when using it.
USB Mini Fan: This fan can help you feel cool everywhere in the outdoor, also applicable for indoor use with computer.
Super Utility: It is a very practical portable power bank for outdoor travel, camping, cycling and etc.
Portable and Lightweight: Easy to carry and store.
Easily DIY by yourself: High efficiency miniature solar cell, can easily be arranged for larger load applications including higher voltage and current loads.
1 x Mini solar handheld fan