More Power, simple! The Just Mobile Gum Pro is a 4, 400 m Ah high capacity-battery. The battery-performance of your iPod gives up, when you are listening your favouirte song? No more currrent but you are expecting an important call on iPhone? With the mobile USB (Universal Serial Bus) power current supply by Just Mobile, you need not to worry over the battery stantus of your iPod or iPhone. Increase the performance of your Apple Devices by Gum Pro! The Just Mobile Gum Pro is available via an impressive 4, 400 m Ah & can be instantly used via USB (Universal Serial Bus)-connection for charging your iPods or iPhones. The Just Mobile Power-battery, offers an output of 1, 000 m A & can charge the iPod or das iPhone completely. The Lithium-Ionen-battery is supplied via USB (Universal Serial Bus)-cable (Mini-USB (Universal Serial Bus)-auf-USB) comfortabley to the USB (Universal Serial Bus)-Port of your PCs or your USB (Universal Serial Bus) Power Adapter (Netzteil) can be charged again. The Just Mobile Gum Pro applies the Standard Typ A USB (Universal Serial Bus) Port as output. Connect your Dock- Connector-on-USB cable simply to the USB (Universal Serial Bus)-Port of batterys. The 3 LED-Lights displays the remaining battery-capacity of Gum Pro an.