Compatible with smartphones, tablets and satnavs from Samsung, HTC, Google, Sony, TomTom, Garmin etc. This cable is designed to prevent your device going into data transfer mode and also to improve charging speed from a powerful USB charger which is built to the wrong spec (eg designed for Apple devices rather than Android), and from computers / TVs, car stereos and other sockets which normally put your device into data mode. It works well with the Asus Transformer T100, Dell Venue, OnePlus One, and other difficult to charge devices. 20 AWG gauge copper cable - This is the lowest resistance currently available and is significantly lower than standard 24AWG or 26AWG used by most 3rd party cables - lower AWG indicates lower resistance and potentially faster charging. This cable is 10ft - shorter cables will have lower resistance. TPE casing - A normal PVC cable with this much copper would be quite stiff, TPE allows the cable to be as flexible as a thinner cable, is more environmentally friendly and less slippery. Micro USB fast charge signal is built into this cable, many car/mains chargers do not send this signal so will not output full power with a normal charge +sync cable. Data Blocker Prevents your device going into data transfer mode to protect it from data hacking / viruses when charging from an unknown socket. Even when using this cable, charging speed will still be limited by the maximum speed your device supports and the maximum power your USB socket is capable of outputting, use one capable of 2A or more for best results. Using this cable will not increase charging speed in all cases. Phones using the Qualcomm "Quick Charge 2.0" spec require a compatible charger and a charge+sync cable to charge at their highest speed. Search for PortaPow Charge+Sync for our Qualcomm compatible cable.