apple watch quick slide up menu mute find my phone
apple watch quick menu with mute &
find my phone
Question marked as
Control Center has moved to the flat oval side button (see picture)
Use Control Center on Apple Watch - Apple Support
A quick press and release will bring up the Control Center that Swipe Up used to give you.
DO NOT hold the button, as that will bring up the Emergency Services display
You may also find this page useful
Use Control Center on Apple Watch - Apple Support