Use transit cards with Apple Watch Ultra
On your Apple Watch Ultra, you can use a transit card with Apple Pay where accepted to pay your fare. See the Apple Support article Ride transit with Apple Pay.
Note: Apple Pay may not be available in all areas, and Apple Pay features may vary by area.
If a preferred card is not required by a transit system, you can use a payment card in Wallet to pay for transit without double-clicking the side button. To choose a card for Express Transit and use it to pay for transit, follow these steps:
Open the Settings app on your Apple Watch Ultra.
Tap Wallet & Apple Pay, then tap Express Mode.
Tap the card you want to use, then enter your Apple Watch Ultra passcode.
As you approach a fare gate or board the bus, make sure your Apple Watch Ultra is turned on (it doesn’t need to be connected to a network).
Hold your Apple Watch Ultra display within a few centimeters of the middle of the contactless reader until you feel a vibration. You see Done and a checkmark on the display.
You can also open the Apple Watch app on your iPhone, tap My Watch, tap Wallet & Apple Pay, then tap Express Transit Card. Under Payment Cards, tap the card you want to use, then enter the Apple Watch Ultra passcode on your watch.