Announces the time on the hour and half hour — but only while this tab stays open. Closing it, locking your phone, or switching apps stops it, same as any web page. ElevenLabs' free tier is 10,000 credits/month — roughly 1 credit per character — so half-hourly announcements can use it up before the month is out; if that happens, it automatically falls back to the browser voice instead of going silent.