I have had the Garmin Swim for about a year and had to exchange the battery recently. The watch still seems to be waterproof (I meticulously followed the manual instructions when exchanging) but all sounds are gone, even when activated in the menu. I don't care too much about button tones, but the acoustical alert when starting a swim I find very handy and very much would like to get back. Also, when the alarm is "ringing" the alarm sign blinks but there is no sound.
Is there a way to reinstate the sounds?