1. BT 5.0 - for 2 weeks of use, there was not a single time when the ears lost contact with the phone! There were also no stutters, as well as any glitches in the crowd of other gadgets, for example, some other headphones began to react badly to frequencies from other devices, losing connection, etc., etc.
2. Working time - Sony definitely did it! 20 percent charge = 7 hours of use at 80% volume on the headphones themselves and 70-90% on the phone itself! I charged only 2 times in 2 weeks, because at work I listen to them for 5-6 hours with small breaks!
3. Matte outer surfaces of the headphones! Definitely after the gloss in the 500 series - this is not a frail plus, at least they will not be smeared and scratched so much!
4. USB-C = fast charging, for someone it may be a plus, but I charge with an adapter for 1A, 5V. It charges in 4 hours, there is a charging indicator, but there is one unpleasant moment - more on that below!
5. Sound - for such a price, I bought it for 3.5k, in general for my eyes, I have a deezer hi-fi subscription, I listen without equalizer settings - excellent! Yes, in some places my simple jbl plugs are better in terms of bass, but in terms of the same sound - the music is cleaner in these and as it happens in some headphones - some instruments or sounds are swallowed due to the budget of the gadget, but here everything is ok.
6. The volume reserve is huge, I listen at 70-80 percent, there is nothing to add here.
7. If your phone has support for aptx codecs, it makes sense to turn it on, but it feels like your ears live a couple of hours worse and the sound becomes a little quieter, but its purity and bass become on the level! But the same AAS is enough, for me personally, I'm not an audiophile, I mostly listen to hard, for such styles these ears are enough, you can still listen to electronics and other genres - tolerably.