so long story short, I live in a Motorhome that I restored. its 20 feet long and 8 feet wide with 9000 miles. I bought it for nothing, rebuilt it, and made it mine. I have very limited space, and enjoy movies, tv, music, ebooks etc. bluetooth quickly proved to be an issue if I let even one MM of metal between the headphones and the source, it cut out. period. not to mention, the bluetooth signal is very power draining and weak at that.
these are different. you charge two AAA batteries either on the stand in the headphones themselves, or you can charge the AAA outside it. I use a nitecore smart charger, i4 with 12v source. they charge within an hour, and give me a week of everyday use in one charge. I'm able to connect the headphone jack directly from my MacBook Air(2015) to the headphone transmitter stand. I can get several hundred feet like this, a little less if its through the front section of the motorhome. I check power draw on every single thing I use, awns this is where these headphone sheen the most. when turned on and being used, they draw about 4 watts. I don't have a more precise way to measure, but 4w is very, very little especially for how nice the sound is. I understand the AAA provide most of the power, while the stand only transmits the signal. it works very well.
as for the headphones themselves, outstanding quality. as I've said I live in a motorhome, so these things vibrate, bounce around(they don't fall or anything), and still work every single day.
-comfy and do NOT clamp onto my head, I'm, 6'3" with a big head at that. I often forget I'm wearing them.
-great sound, I use these over my Sony mdr1000x whenever i can. I only use the Sonys when I'm in a loud area.
long, long battery life with REPLACEABLE AAA. this is key, if you take care of these and nothing ever shiorts out inside, they should also indefinitely. batteries don't hold charge? no problem, put new ones in.
-power draw is 4w, incredible
-bass boost and functions, I've turned on bass boost the day I bought them and never turned it off. I like bass, and don't like making other people hear it.
-not noise cancelling(eyes its a pro, I need to be bale to hear if anyone is outside)
pricey, though I payed 170$ during a 4th of July sale
bulky, large cups. limited space, its great for me just know they are big. each cup is like a slightly inflated baseball that was slightly squished by a giant, so its got the mass of two baseballs but kinda flattened
-slow charging on stand.
just buy them, they are amazing.