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Optimize your customers productivity throughout their days with the Mobile Power Bank X100! It can charge any phone or tablet anywhere. The 4,000 mAh internal battery has enough life to fully charge a mobile phone or tablet with the included micro USB input cord. The 5V/1A USB output will charge at the same rate as most wall charges. Frequent travelers and heavy mobile phone users can show off your laser engraved logo while giving life to their electronics.