Feature Request — Headset Controls + Remaining Time

Hi! Could you please add support for controlling playback using the physical button on wired/Bluetooth headphones? (Play/Pause with single press, and ideally “go back one segment” with double-press — similar to Voice Aloud Reader.)
This is very useful when walking, without unlocking the phone.

Also, it would be great if the app could show the estimated remaining time to finish the book, based on current playback speed.
Thanks a lot for considering this!

PS: the more features from Voice Aloud Reader, the better