How to make use of your Watch’s Flashlight
watchOS 4 introduces a handy new Flashlight mode, which can be found by swiping up from the bottom of the Watch screen to summon Control Center.
LIGHT IT UP
Tap the Flashlight icon on the right to illuminate the entire display with white at maximum brightness. Swipe down or press the Digital Crown to dismiss it.
But wait, there’s more! Swipe left once while Flashlight is active to quickly flash between white and black, or twice to enable red safety mode for runners.