Light source: 3528 LED x 3 piece <br>LED luminous flux: 24 to 27 <br>Solar panel: Polysilicon 5V/80mA <br>Charging time: More than 6 hours of solar charging and more than 1 hour of USB charging<br>Duration: More than 12 hours <br>Battery: Li-Polymer battey 3.7V 400mAh