Inergy Spark (Black) Portable Solar Charger Backup Power Built-in Lithium Polymer battery cells that are lightweight, compact and reliable with a 1.2W monocrystalline solar panel. Compatible with most all 5V USB charged devices. Dual USB outputs allow for simultaneous charging. Built-in LED flashlight works perfectly in the dark or in an emergency. Charge your Inergy Spark via conventional outlet or charge it using the solar panel. Package contents: Inergy Spark Solar Charger, micro USB cable, carabiner clip, and user manual.