... MP3, MP4, etc.)Configuration Mono/Poly high-efficiency solar panel: 10W, 18V, 5m connected cable, life for ... 12V, life for 3 years; Energy-saving LED lamps: 2W, 12V, 2pcs, luminous flux can reach ... all need to charge to be used; Electric quantity indication function: 3 segment yellow LED respectively ... indicate 30%, 60%, 100% of the battery electric quantity; 12V lighting and 5.5V charging function: ...