Walt the atomic talking clock is very accurate and it's voice is soft with
a slight brittish accent.  independent living aids has it along with irti
etc.  I got a couple of talking cube clocks which are quartz have a male
voice with a boston accent, a talking calendar and a countdown timer and a
beeping alarm.  I also have a couple of 24-hour clocks I bought from the
nfb materials center whose voice reminds me of a dear friend of ours I just
wish it could replicate her voice exactly because it sure is sexy.