... 1) LED indicator, on/off button 2) USB output, can charge two devices at the same ti ... battery1) LED indicator, on/off button 2) USB output, can charge two devices at the same time 3 ... And this version is with dual-USB (upto 2A output) design, can charge two devices at the same ... Sony Ericsson, Samsung, HTC, LG and digital devices with 30-Pin Dock connector, 2mm, 3.5mm, Mini USB Charging connectors etc2) ...