1)the mechanical energy change into electrical energy by your shake hands,it can be used to charge for mobile phone and other small digital products,not need the battery.
2)it's very small,portable,can be placed in pocket or small bag and non-occupied space, it brings convenience for your life and work,especially for those who travel.
3)it has five kinds of plug,the plug can also be customized according to your need.
4) Vol. output:5.8V,6.4V
Max. current output:≥400mA
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