I may add that my dogs wear a lot of "Bling" as I am hearing impaired.
Bells do not carry any distance for me. Beepers I can hear but in heavy cover
(cattails) I still have a hard time isolating just where or what direction.
Close in is worse to zero in on a beeper. I do use the Garmin Astro.
It helps but I do not care to be looking at it when you are expecting a bird to flush when you walk in. I also cannot hear the damned point alarm in the Astro & I have tried all the tones. Lower frequency is much easier to hear,
say around 700 - 900 HZ. Nothing like that is available in the Garmin alarms.
Volume level on the alarms is probably blaringly loud to someone with good to average hearing. My hearing is not bad below 2Khz. Above that it is almost gone. Between living in dense brushed grouse / wolf country
& being hearing impaired my dogs will continue to "Have Bling".
Judge an owner, perhaps. Don't judge any dog till you have watched it work.
I look forward to seeing if Garmin ever combines any e-collar functions into the Astro collars. An Astro with either a beep or vibrate function would be slick. I usually don't even need to stimulate if the collar has beep or vibrate functions in it.