Portable Power Hand Crank Generator With Usb Charging And Manual Crank For Product Details ??Long life?--Easy to generate electricity; Light weight; Miniature metal casing, anti-corrosion, anti-oxidation, prolong product life; ??Fluctuation speed is fast? - The faster the oscillation speed, the larger the power generation, the faster the oscillation speed, the higher the generator voltage, the larger the power generation. ??energy saving? - The generator is very energy efficient, does not require unnecessary charging, and saves electricity costs. It is very environmentally friendly and safe to use at home. ??Performance stability? - The output voltage of the manual generator must be greater than the set voltage to stabilize the output. Robust construction, low noise and stable performance. ??Application? - USB Generator can be actively used in the field, field operations, field trips, rescue operations, natural disasters, survival training, emergency communications, long-term power shortage, tourism, emergency power supply and other fields. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.