This is a great value around-the-neck headphones. The claimed battery is 24 hours which sounds about right as after using them for a 15+ hour session, they had not yet hit the 30% warning. They are comfortable with three different sized tips to fit whatever sized ear holes you might have.The only negative I can say is that compared to the other headphones in this model family, it does not have a magnet in one of the earbuds for pairing around your neck when not in use. I solved this by hot-gluing a magnet to one of my earbuds, but it’s annoying that I have to do it myself. Come on Sony! It’s like a 10-cent part.Bluetooth connectivity is strong and I can mostly listen to my tablet from the otherside of the house (walls permitting).Sound quality is perfectly acceptable for me. It’s only standard A2DP so there’s a cap on the maximum quality you’re likely to get anyway.

The battery life makes this really good for sleeping in, or wearing for extended periods, without needing to recharge at all during the use period (no docking to get the extra promised hours of individual buds, you *will* get a full night’s sleep with this).It’s as comfortable to wear as regular wired buds, though the weight of the battery and transmitter pieces on the wire will make it want to tug out of your ears when you toss and turn, or walk around.Sound quality isn’t super amazing out of the box, compared to the equivalent budget wired Sony earbuds (like MDR-EX15AP, which I recommend as a budget wired option, and you can use a cheap extender cable if needed), but it’s more than sufficient for casual use, and especially sleeping whilst wearing. You can adjust the output with EQ software.The microphone is pretty clear, just be aware of fabric rubbing like any wired earphones, and just try it and see how you like it. I don’t use this thing for calls, personally.I find this cheaper Bluetooth version WI-C100 better than the more expensive WI-C200 version. Barely any difference in functionality, this maybe even being the superior product, but this is cheaper.I easily get 16h+ out of these, plenty for a night’s sleep, and time before and after that. Essential for me with sensitivity to neighbour noises, and needing sound to sleep. Whilst I only bought this because my new phone didn’t have an AUX input, and the adaptors didn’t work for my newer phone, it really is much more convenient.If you expect to wear this for 16h+ per night/day, you might want a second one to keep in a drawer/your bag, in case you wear out the battery before being able to recharge, which only takes maybe a couple of hours, and doesn’t need an expensive wall charger. It comes with a USB-C port for charging.The 25h claim is overly optimistic (I assume this is done with the bare minimum volume and functionality). I would say maybe 18h would be the most to expect.Really, I can recommend these as a budget sleep-aid for us bad sleepers, especially those with misophonia and/or Asperger’s (you can combine this with brown noise on your phone/computer to provide external noise masking, as there is no ANC (active noise cancellation) with these).Also, as just a cheap pair of Bluetooth earphones that can cope with sweat, it’s still good option for all-day use, with adequate sound quality after you adjust the EQ to your liking.Note: These will automatically turn off when the USB-C is connected to power or a device, so cannot be used whilst charging, or as wired earphones. Damned companies removing useful 3.5mm ports.

I’ve been buying this family of product for years (10+ years) and loved them. Noticed that they discontinued the old ones and made changes so I went with these after breaking my old ones (my own fault). They’ve turned a great quality product into something I wouldn’t give away for free. The quality of everything is vastly inferior. A total downgrade. Brutally disappointed. Do not buy.

Best well rounded in earphones
Bought this the second time after losing first one.That should tell you already how much I like itIt is a very nice piece of hardware.Excellent build , excellent battery backup , all day wearable.This is so much better than the totally wireless models because mic sits closer to your mouth + ear phones are connected by wire so you don’t accidentally lose one ear piece.Also , the battery is powerful to last like 25 hours of listening before needing recharge. For me it translates to recharge once in 2 weeks.In other way , it also means it has enough power to drive those audio output unlike wireless ones.If you want to customize , there is an excellent sony app which allows you to fine tune music quality. Once you fine tune it with sony app you realize how powerful the bass can be on this thing.In short , extremely satisfied . I bought second piece for myself , and one more for my mother.

Better than expected
These are so easy to use, they connect quickly. The sound is stunning. I use it to listen to the radio when I’m outside, use them with my quest 3 as well… super! I didn’t expect them to be so good and give such great sound.