Overview: Solar Output: 5V 250m Ah to 700m Ah USB Charging: 5V 300m Ah to 450m Ah USB Compatibility: 2.0, backwards compatible with USB (Universal Serial Bus) 1.1 Connectors: Mini USB (Universal Serial Bus) & Micro USB (for Motorola/HTC/ Dopod/MP3/MP4) Samsung Sony Ericsson LGSpecification: Dimensions:2.52in*2.52in*0.63in Weight:17.5oz