Its slim design is ideal for slipping into your briefcase or backpack for on-the-go charging. This silver aluminum 2000 mAh power bank features four LED lights that indicate battery status. Comes with a micro to USB cord. UL certified lithium-polymer battery. Input: 5V/1A; output: 5V/1A. Measures 3 3/4" x 2 1/2" x 1/4". Screened logo.