Maximum emergency power in your pocket or your bag. The PowerBuster is easy to use and fully portable. It offers you up to 4 full charges for the average mobile phone or up to 2 charges of an iPhone. To charge your device simply select the correct tip from the selection included and connect to the PowerBuster for power when it"s needed. The PowerBuster comes complete with adapters for most mobile phones, iPods and iPhones but if your tip is not included and you have a USB charge cable, then you can use the female USB tip to connect to your charge cable. You can check the power in your PowerBuster by pressing the multi button with nothing connected, this will give you an indication of the power left. Make sure you re-charge your PowerBuster to ensure you have power when it"s needed.