Plus: = clearly visible in white housing raised black keys with distinct spaces and easy to palpate; Clamshell design comes (unfolded) contrary to previous phone habits Elderly; Answer by opening very easy; Hiding unneeded functions facilitates the acclimatization and operation; ordinary battery life (about 1 week); easy charging cradle included = no fumbling with mini Steckerchen in visual impairment or "fat fingers" otherwise an insurmountable obstacle; Earpiece volume for hearing impaired sufficiently adjustable.
Minus: button for setting the handset volume is exactly in the grip area, thereby often unintentional adjustment; Display could be even greater for the visually impaired quiet setting option for font size would be nice (only the time is displayed good size, good for a wristwatch-replacement for the visually impaired); Function "Blink LED by SMS inbox or Missed call" would have to be shut down, irritated otherwise only the users who can not deal with SMS or call log.
In summary: buy recommendation!