These were beloved by many children. The problem was that they didn’t have any app-based control and only came is seaside-themed colours rather than traditional hair colours so they weren’t successful in the broader market.
Phonak Audeo Life were rated as waterproof down to 50cm, which is full submersion, but not really deep diving. Phonak Audeo Infinio rechargeable devices have the same waterproof capabilities and it’s probable that Unitron Moxi Smile Rechargeable products will also as they seem to have the same basic design and parylene coating.