there are many sibling/child comments here touching the bluetooth speaker topic.

obviously there are numerous people blasting those in public places in waay too high volume.

sometimes when I ride bicycle in non-car road (cycle/hiking paths around luxembourg) i put not-too-loud music playing on phone speaker (about 70% volume) both for vibes and also for safety. -- as there are people walking which may be obstructed by the bushes or other oncoming cyclists.

for the vibes part, i am really hoping smart-glasses or similar equipment to be more common, as i got echo frames last year, i am quite happy about the vibe it adds when i play background music (just to myself) in different occasions. (even though quality is not great)

many people mentioned headphones & earbuds, but i do not see them as the solution for nature/hiking related situations;

- (partial) blocking of external sounds, even if there is no noise cancellation, it dims outside sounds like bike bells, engine sounds, other people yelling at you because you are in danger, ie. may cause accidents

- comfort & compatibility issues with other equipment. like hearing aid (maybe that's the reason some people blasting away such high volumes? -- maybe never hearing loss haven't diagnosed properly!). if you have a helmet, over-head headphones usually dont work, stuck with ear-buds. fit and comfort of these are quite difficult. even if you use over-head ones, cushions usually go bad quite fast due to mild sweating or contact with external air & humidity.

i really hope price of bluetooth-speaker or bone-speaker glasses will go down significantly in the future. this way, you don't obstruct external sounds, not add heavy or squishy things to your ear while adding your theme song on a moment.

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obviously i mention these as a reasonable human being, who keeps their phone in silent 7/24, and all videos muted all the time (i also mute my laptop, as i hate hearing other people's zoom/chime calls constantly ringing throughout the day!)