| http://www.w3.org/ns/prov#value | - This mode is particularly effective if you are some distance away from the speaker, 10 metres is easily achieved (and up to 20 metres in ideal conditions with no obstructions).Using the Roger Pen in the right way can give a hearing aid user a very distinct hearing advantage over a normally hearing person in a number of scenarios, now that is clever technology!The Roger Pen can also be used alongsi
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