Yes, Suunto Vertical and Race can connect to various power meters (pedal type, crank type etc), as long as these power meters use Bluetooth for connection. The data are then shown on the app on graphs, average values, used to calculate effort etc.
Mind that most of the power meters can connect to one device at a time when are being used (like HR belt sensors, bike trainers), but some are capable of connecting to two devices simultaneously.
Why am I mentioning this? Because the scenario of using a power meter or a bike trainer with internal power meter along with an app like Swift, Rouvy etc, and having the power and HR data also on the watch and then on the Suunto app is only viable when having HR sensors and power meters that can broadcast to more than one devices simultaneously (one device is the watch, the other is let’s say the laptop that runs Swift).
A viable scenario with simple power and HR sensors (single connection I mean) is connecting them to your watch and use a “dumb” trainer or rollers. Or having two sensors of power (one is power meter, the other is the smart trainer with internal power meter) and HR (let’s say the one is a belt sensor, the other is the optical sensor of the watch). This way you will have the data both on virtual training software and the watch and then on the Suunto app.
I hope I was clear enough, this is a bit difficult to understand when first getting to use sensors, trainers etc.