The compact lit logo promo power bank is a great gift to impress your clients on your upcoming marketing campaign. This compact power bank equips you with a 4000 mAh polymer battery that has an output of 5 Volts/1 Ampere and 2.1 Amperes that will charge any of your gadgets with ease using your own charging cable. If this power bank runs out of juice, you can recharge it through its micro USB that receives 5 Volts/1.5 Amperes of power. Even better, you can customize this power bank to have your logo to better promote your brand, making sure that the clients who receive this fantastic and useful gift will remember your company whenever they use it.