Can I use the Apple Watch Ultra 2 with smart trainers like the Wahoo KICKR

Bluetooth Connectivity

The Apple Watch Ultra 2 uses Bluetooth Smart (Bluetooth Low Energy) to connect to external sensors, including smart trainers[4]. It does not support ANT+, which is commonly used by devices from brands like Garmin[4].

Pairing Process

To pair the Apple Watch Ultra 2 with a smart trainer:

1. Open the Settings app on the watch
2. Go to Bluetooth and select the desired sensor to connect
3. Make sure the sensor is compatible and set up correctly

Limitations

- The watch can display metrics like power, cadence, and speed from the connected smart trainer[5]
- However, you cannot control the smart trainer directly from the watch. This functionality is not supported.
- Some users have reported occasional dropouts or disconnections when using the Apple Watch as a heart rate sensor with Zwift[3]

Alternatives

If you prefer a more seamless experience, some alternatives to consider:

- Use a dedicated Bluetooth or ANT+ heart rate strap like the Wahoo TICKR[2][3]
- Pair the smart trainer directly with your iPhone or iPad running Zwift[3]
- Use a Garmin watch which supports ANT+ for a more robust sensor connection[4]

So in summary, while the Apple Watch Ultra 2 can connect to smart trainers via Bluetooth, you may encounter some limitations compared to using a dedicated heart rate strap or an ANT+ compatible device. The experience will depend on your specific setup and preferences.