What is a fun gadget you have purchased that has added value to your life?

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Last time I needed new headphones for going out, I bought a Shockz bone conducting headphone.
While the specific one I bought was the wrong choice (the Run I got is slick but needs a proprietary charging cable instead of the USB-C the Move uses, and they sound 100% the same), overall the concept is really good. I enjoy hearing people around me, for someone who more listens to podcasts and radio shows not music the quality is perfect, and I can wear these on my bicycle without having to worry I won't hear something.
Also, since they don't sit in the ear not enclose it it's easy to semi-forget them there as they're so comfortable, no stuffed feeling or sweaty ears. I sometimes just use them at home instead of shifting a podcast onto the sonos speakers. Just easier.
- Yes. I love mine. I originally got some bone-conduction headphones to use at my job because I work in a high noise environment and they still work while you're wearing earplugs, but I use them pretty much constantly now. It's really nice to have my music or podcasts and still be able to hear when someone asks me a question, or to be able to hear traffic coming if I'm out walking or jogging.
  I've had a couple pairs of them now and weirdly bone-conduction headphones seem to be the one electronic device that under promises on its battery life. I don't know if maybe I just got lucky, but the cheap no name set I got off Amazon promised 5 hours, but even after a year still regularly lasts 8 or 9. My Shokz Open Run Pros promise 10 hours, and I routinely get 15 or 16 hours. So that's nice.
  
  Out of curiosity: did you ever test noise cancelling headsets in that high noise environment? I’d think that in-ear and over-ear nc headphones should work quite well too.
  
  No, because active noise cancellation doesn't offer any hearing protection. It doesn't make the noise go away, it works by sending out an extra soundwave which is a mirror inversion of noise to be cancelled, sends out peaks where there were troughs and troughs where there were peaks, and they cancel each other out as far as your brain is concerned. But to work the destructive soundwave has to be as loud as the sound it's cancelling, and now you have two sound waves blasting away, still moving air and putting pressure on your eardrums, and it's that pressure causes the damage to your hearing.
  Proper PPE has a passive barrier that physically blocks the bulk of the vibration from reaching your eardrums in the first place. Active noise cancellation does kind of the opposite of that.
- I've heard of these for a while and general question for you and anyone else who's looked. What are the red flags? Nothing comes without risks and years of research has shown the hearing damage from traditional headphones. There has to be a rub with these. What are the negative rumblings of using these style of headphones. They have to be there. We just don't have the decades of research yet.
  
  If I now say that your premise is wrong (headphones don't cause hearing loss, loud noises do, independent of the source), does that automatically answer your question? 😛
  Now to dig a bit deeper into that, there is a lot of research into MIHL from using PLDs, and the key thing is always people turning up the volume higher than they normally would, usually due to the context of where they are. That is, we use our little headphones in noisy environments, and to drown out the noise we turn them up too much and start damaging our ears over time.
  In that regard, bone conduction headsets are worse. They are intentionally fully open, and don't in the slightest bit try to reduce ambient noise. That is, if anything you'd be tempted to crank them up even higher.
  I will however say that the models I've used all came with an interesting "safety" in this regard that stems from the way they work: At a certain and not that loud noise level, they start vibrating physicially off the skin during playback, in turn plateauing the achievable volume. I suspect however that this level is already beyond healthy.
  So, in other words:
  If you're concerned about hearing loss, keep the volume in sane reaches. If you also need to ignore outside noise while listening, this means getting enclosing and/or noise-cancelling headphones, not open ones like bone conducting. However, if keeping the volume low, say during listening at home, bone conduction is no different from other forms of receiving audio, both still stimulate the hearing canal hairs.
  
  Agreed 100%.
  Before I got my noise cancelling headphones, I was very aware of the volume that I have set when trying to watch a movie in a plane. After I got the noise cancelling headphones, I no longer have to set it that loud anymore.
  That said, some airlines need to relook their volumes of their PA system. Some of them are shockingly louder than necessary. Lol
  
  Yeah, I love my ANC earbuds. In pass-through mode, I can hear ambient sounds almost better than I can without them, especially on a bike where I can tune them to blank wind noise but allow voices and bells. And you're right about not needing high volume to hear music well. They have great sound quality, and the ANC is indispensible on airplanes.
  The downside is cost; GP's bone-conducting headset is $90, and the other pair they mention is $60. A good pair of ANC earbuds starts around $200, and some of the better pairs are upwards of $300.
  Worth the money, IMO, but if $60 is all you can afford, GP's might be the better bet than super sketchy-quality cheap ANC earbuds.
- What's the frequency response like on those? Can you hear low-end bass in a way that sounds good?

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