The Pep 4,000 mAh Power Bank is a lightweight rechargeable lithium polymer Grade A battery device powerful enough to charge smartphones, MP3 players and more. This reusable power bank charges via a USB cable (included) which can recharge the battery backup or be used to charge up devices with a micro-USB input like Android smartphones from Samsung(R), Motorola(R), HTC(R), Nokia(R), and others. Input: 5V 1000mA. Output: 5V 1000mA. Complies with Prop 65. 0.375" H x 2.688" W x 4.31" L. Imprint Area is 3.00" H x 1.50" L on Per side. Please call for rush delivery availability or for multi-colour, multi-location imprints.