Originally Posted by sirmaru
PW has a "Time Left to End of Chapter" which is very accurate. In that way one can decide whether one has enough time to finish the chapter or just stop at the next paragraph.
Does K4 have that?
No and I am happy it doesn't, I prefer the gauge. The K4 has the gauge like the K3 that shows how far you are till the next chapter if the chapter navigation in enabled in the book you're reading.
The K4 and K3 have very similar firmware but the K4 is faster and has a few tweaks.