Apple Watch SE 3: New Gesture Controls Explained (Double Tap + Wrist Flick)

Quick answer: Apple Watch SE 3 adds two system gestures—Double Tap and Wrist Flick—for one-hand control. Double Tap lets you trigger the primary action in many apps (answer a call, play/pause media, advance Smart Stack). Wrist Flick quickly dismisses alerts like timers, calls, and notifications. Both live under Settings → Gestures on the watch, and both work out of the box on SE 3.