This is the reading lamp that charges via the sun or USB for convenient light anywhere at any time. Placing the lamp's removable solar panel in a sunny location (whether inserted into the lamp's base or by itself) for eight hours charges the panel's three included batteries. The charged solar panel provides up to five hours of power for the lamp's twin LEDs, producing 100 bright lumens of light. In addition to solar charging, the panel can plug into a computer or AC using the included USB/AC adapter for charging or direct power (charges in three hours). The lamp's articulating head and arm adjust to any angle and lock into place to provide light at any height. An additional USB cable connects to the back of the lamp for charging personal electronic devices. 24" H x 7" Diam. (2 1/2 lbs.)