This has a 2200 mAh lithium ion grade A non-recycled battery with auto on/off overcharging function and an output of 5 volts/1.0 amp. Connect any USB cable or use the included micro USB cable to recharge devices and the power bank itself. Get a hold of new customers when you make this UL certified power bank your next giveaway! It features anodized aluminum housing and comes in an individual box. Add your company name or logo for maximum visibility. Surprise clients with this amazing gift!