This is the first time I've purchased wireless earphones. I've been using them for a while now.
It's called a bone conduction type, and it doesn't block your ears.
The sound quality is not that great, but I often walk in town while reading books or tablets, so being able to hear is a big advantage.
My tablet has had a cheap SIM (500 yen/month).
The communication capacity is poor for watching movies on Amazon Prime, but it is sufficient for audio only.
Also, I have no problem using the tablet as a car navigation system, which is why I use it when I drive around my parents' house.
Aside from that.
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There was an anime called "Bishonen Tanteidan(Beautiful Boy Detective Agency)" in the Amazon Prime menu, but I only saw the title.
However, as soon as I found out that it was written by Ishin Nishio, I suddenly changed my mind and watched it in one sitting - or rather, listened to it in one sitting - on Amazon Prime.
The so-called Nishio's works are best viewed together with the images, of course, but the audio alone is enjoyable enough.
Walking with my tablet in audio mode thrown in my backpack and listening to the audio through my bone conduction earphones is safe, stress-free, and helps me get my exercise.
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I wonder how many people can enjoy video content with only audio.
I sincerely hope that NHK will consider offering the NHK Special as a "free audio-only" service.