With the Juicebar Mini Charger you get 2 extra hours of talk time- out of the clear blue sky! "The surprisingly powerful Mini Charger is only^ inches long and has a beautiful blue LCD display light indicator. It can be charged via a USB port or by exposing the solar cell to light. The unit's built-in usb supports iphones and also includes 4 connectors covering all popular mobile phones MP3 players and more. The Mini Solar Charger is just 4" x 2" x .6" and weighs only 2 oz. Key Features: Supplies 2 hours talking time to average cell phone - Multi-functional LCD display shows status of charging discharging and battery power level with various icons - Includes 4 of the most popular connectors Full Specification: Built in rechargeable Li-ion battery: 3.7volt 600mAh Multi crystalline solar panel: 5.5 volt 45 mAh. Contents: One charger 4 connectors adapter cable instructions "