Use the Zildjian Mobile Battery Pack to give your smartphone or mobile device a battery boost when power runs low. Simply charge the power bank via USB to give your mobile device a battery boost while traveling. Intelligent ID chips are able to identify and charge your device properly and safely. High power capacity (3,000 mAh) with a sleek and compact design. Built-in flashlight is powerful and is ideal to take on gigs or anywhere where the light is low. Always read and follow detailed instructions - included with purchase.