ANT head unit with more alert sounds than 705?

bahzob

I have a Garmin 705 and like to use the alert function on it to warn if going under/over power, rpm, hr whatever I happen to be working on.

Only issue is that it uses the same warning tone for all situations.

I'd prefer the option to have a different alert sound for different situations.

Anyone know if there is a head unit that can do this?