... excellences: safety, good compatibility, big capability, portability, long-term and free use. SY-506 serious portable solar power uses the ... Mp4, GPS, Mobile / Cell Phone, Digital Camera, portable game, repeater, 3 PCS LED light and so on. It is widely used for ... trip, outdoor working, back up power, emergency power, and so on.Its excellences: safety, good compatibility, big capability, ...