With the Oomph Value power bank, your devices will never run out of juice again! Measuring 3.5" x 1.19" x 0.81" and available in several colors, this 2000 mAh rechargeable lithium ion Grade A battery is enough to charge phones, tablets and other devices. It charges via USB cable (included), which can both recharge the battery backup and charge up devices with a micro-USB input. Input 5V 1000mA. Output 1:5V 2000mA/Output 2:5V 1000mA. Customize with an imprint (laser engraved or ColorPrint) of your company name and logo for maximum brand exposure.