Can I use different clock face and always-on display?

[LindBS]

I am using new clock face called Numerals Big but it doesn't work as always-on display. 

Do I need to use different app for Clock face and Always-on display?

And how can I do that? I am checking Clocks app but it doesn't look like working here. 

[Guy_]

Hi @LindBS - Always On brings up the default watch Always On displays, which is independent of the clock face you choose.

There may be a few other clock faces that have an Always On capability. There is a section in clock faces in the Gallery for them and only them.

Beware though as Always On with a big display will use the battery more.

Like if you leave your flashlight on all the time it might last a day whereas if you turn it on only  when you need it it could last months.

With a big display screen you can use wrist wake so it comes on when you look at it.

Swipe watch face to the right to get to Quick Settings, there disable Sleep and Always On and enable wrist wake as an alternative.