I have purchased approx 10 power fire wire cables for Iphone5 from this company.
Several were given to friends and family as they were perceived as a good value for the money. Without fail everyone of the cables failed in less than 45 days of receipt. Works for approx 10 days then you get an "unathorized accessory" warning on your Iphone and then they stop working altogether. Not sure if Apple has some sort of proprietary software in the phones that cripple the non-Apple accessories but if they do HD is aware of this and should halt selling products that are doomed to fail.
BLOCK THIS EMAIL ADDRESS!!! DONT BUY!!