The 2200 mAh rechargeable lithium ion Grade A battery is enough to charge smartphones, MP3 players and more. Reusable power bank charges via 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, Motorola, HTC, Nokia, and others. Green LED indicator light illuminates when device is fully charged. Input: 5V/500mA. Output: 5V/1000mA. Media device not included. 3.625" L. Imprint area is 0.38" H x 2.75" L on Engraves white. Silver engraves tone-on-tone. per side and includes a Laser Engraved Imprint. Packaging: Bulk. Please call for rush delivery availability or multi-colour/multi-location imprints.