Imprint Method: 4 Color Process - Show off your advertising strength with this 2000 mAh power bank! When you want to supply your clients with an emergency smartphone backup, this low-cost 1" x 3.63" x 1" power bank is your answer. It provides approximately 20-30 minutes of talk time. Choose from several product colors before customizing it with your name, logo or marketing message to boost brand awareness. Nearly any company can use an amazing promo tool that their target audience is sure to love!