You can add your Zilch card to your Apple Watch through the Zilch app. Just make sure you’ve added your Zilch card to your Apple Wallet first.
Check your Apple Watch is turned on and close to your phone, then:
1. Open the Zilch app
2. Go to Account
3. Select Zilch account details
4. Select Apple Watch
5. We’ll reveal your unique CVV (remember this as you’ll need to add it in the Apple Watch app)
6. Tap Open Apple Watch app
7. Under Other Cards on Your Phone add your Zilch card
8. Enter your CVV when asked
You might find these Help Centre articles helpful: