The watch vibrates briefly to signal a notification is arriving, then displays the message briefly totally hands-free.
The display can be set for white text on black screen or inverted.
Three buttons are programmable by developers to perform assorted functions.
More buttons for control. The lower left button activates a sidelight briefly for low-light conditions.
The app displayed on the phone is the settings screen for the OpenWatch app that controls the displays sent to the watch.
The watch is big but comfortably so to provide a decent display.
Size comparison of the watch and theh phone.
White text on a black background