Naztech 1800mAh Ultra High Capacity Portable USB Battery Charger for Micro USB Devices TheNaztech PB1800m Power Bankis designed to blend uniquely to your device. The PB1800m extends your talk time up to 8 hours as well as extending your audio play time for up to 42 hours. Recharge on the go! Talk Time: 8 hours, Audio Play Time: 42 hours Output: 5V, Miliamp: 1800mAh Cable Length: 3.5-Inch, Cable Guage: 3.5mm Compatible With Most Phones