Question about Sony Wf-Sp700n

The right button pauses with one click. A double click of the switch skips the current song and a triple click repeats the last song. So a normal button which is known from many other headphones.

Yes, you can take calls quite well, only it is not always allowed in the fitness, but for sports they are very well suited have never lost them or fallen out even during a hit traininig not with the headphones you can pause on the right side and play and on the left nois candling and ambience mode.
It is best to leave them off because the battery life will be less but

all in all i am actually very satisfied with the headphones can't complain and no you can't play the next song on the headphones that's not possible but create a playlist is the best way i do it and only the music i like comes on.

in summary

you can also adjust the volume via your phone, they are pure sport headphones.
left button headphones nois/ ambience mode
right button headphone play, pause, answer calls and ( quick sound setting you don't need believe me )

and everything else on the phone but download the app from sony there you can set everything even more precisely

equalizer / sound mode and so on.

I hope this helped you :- )