Had the BookBook for iPhone 4's and was very happy with it - if only the price was not so high ... So I have got for my 5s the cheaper competitor products with the fastening technology fetched from 4p. Unfortunately, however, all my callers have complained about the poor voice quality, which is why I have put away at some point ... After just over a year now I have retold me the ORIGINAL BookBook and am (again) very satisfied. Holds the attachment, meticulously crafted and the voice quality does not suffer. Dear paid again and pleased with how the favorable competitive product and then can not use ... The star's withdrawal because it is really very expensive. :(