10000mAh wireless power bank with huge capacity can charges most smartphones over 6 times or a tablet 2+ times. Suitable for a business trip or other outdoor activities.Without extra worry about low phone battery, enjoy your devices entertainment anytime.Dual USB battery pack combined with 5 V / 2.1 A and 5 V / 1A output, simultaneous charging for 2 devices. 4 blue LED indicators show the power left as 25%-50%-75%-100%. Charges in just 14-15 hours with a 2.1A charger.With built-in safeguards design, this power bank can auto identify and change the charging current depending on the different devices to protect your devices .Choose from four color and add your school, sports team, organizational or company logo or message to create a branded giveaway sure to resonate with your customers.