PB-59 is Ultra-Slim Power bank with an extra ordinary dual port. Double USB port User is allowed to charge two cellphones or tablet at single time Battery Capacity. It has 5000 Mah power capacity. Performance of PB-59 is able to charge two bar/smart phones battery. Mobile phone is charge with Micro-USB charge cable. Each charge of power bank enhances your battery life stage up to 130%. PB – 59 is an ultra-slim power bank with an extra ordinary dual port feature that can charge two bars of all kinds of mobile phone or tablet in one go. It can charge power to make the battery last longer. This power bank is fully certified under quality check department.