To manually lock your Apple Watch, you need to access the Control Center and tap the lock icon. Here's how:
- Access the Control Center: Touch and hold the bottom of the watch face.
- Swipe Up: Swipe upwards to reveal the Control Center.
- Tap the Lock Icon: Look for the padlock icon and tap it. This immediately locks your Apple Watch.
When locked, your Apple Watch will require your passcode to unlock it. This ensures that your personal information and data are protected when you're not wearing it.