Impress your clients by giving them the dual-port lit logo promo power bank as a freebie on your next marketing campaign. This power bank is equipped with a 4400 mAh lithium ion battery that gives an output of 5 Volts/1 Ampere and 2.1 Amperes through its two USB ports. If this power bank runs out of juice, you can easily power it up via its micro USB input that receives 5 Volts/1 Ampere. To make this an even more effective marketing item, you can customize it to have your company's logo imprinted on it which lights up whenever this power bank is in use, making sure that your clients remember your brand well with this fantastic and useful gift.