Uses the powerplay pins to charge your mouse, just drop it on there at night and you'll have a topped up mouse next time you use it. The power connection is just 2 M3 screws as contacts and an old USB cable I cut up
I bought my xm4s in Nov '22, and the battery in them died after 2 years. After buying and replacing the internal batteries (which was a real PITA), 2 years later they again die after 10 or so minutes. I was told that it was a firmware issue and after the upgrade and battery replacement they'll be fine, but they aren't.
Can't help but feel like I paid for a high end product and still suffered though Sony's poor engineering, now I can't seem to find earbuds that check all the boxes for me, which is mostly wireless charging, in-ear detection, round stem for my silicon tips, maybe auracast, at a reasonable price
Should I bite the bullet and get the XM6? Feels like going back to an abuse ex