The Juicebar Power Tube contains a high capacity battery that can fully Juice-Up your smart phone with a single charge! The polished alloy tube looks amazing, and Juicebar can hold a charge for over 30 days, so you can Juice Up right when you need it! Juicebar's built-in USB port allows the use of your device's own cable and cutting edge engineering quickly chargers all popular mobile devices. Juicebar Power Tube is incredibly small and light measuring just 3.5"x .87" and weighing only 2 oz!