Place an Apple certified charger or charging cable on a flat surface in a well-ventilated environment.
Apple Watch comes with Apple Watch Magnetic Fast Charger to USB-C Cable (Apple  only; Watch Series 7 and Apple Watch Series 8) or Apple Watch Magnetic charging cable (other models). You can also use MagSafe dual charger or Apple Watch Magnetic charging base (sold separately).
Connect the charging cable to the power adapter (sold separately).
Connect the adapter to a power outlet.
1. Connect the charger
Connect the Apple Watch special charging cable to the charging plug and plug it in.
2. Place the watch
Take the Apple Watch out and place it directly on the circular charging head without any connection.
3. Observe the interface
Make sure that the charging head is attached to the back of the Apple Watch, and observe whether the main screen of the Apple Watch shows the charging screen.
4. Charging is complete
When the Apple Watch home screen shows 100% battery, you can directly pick up the watch and complete the charge.