Mipow 2600M Power Tube Phone Charger - Grey All in One power tube for Micro USB powered device with 2600mA built in battery Specially designed for micro USB powered devices and more Unique patented all-in-one design, it can be compatible with most Micro USB devices such as Samsung, HTC, Motorola, SONY without any extra charging cables. Can charge two mobile devices simultaneously Built-in Male USB input for recharging without bulk of cables.