The Suunto Smart heart rate belt is compatible with Bluetooth Smart (Bluetooth Low Energy), which basically enables a connection to many Bluetooth-enabled devices, including smartphones and smartwatches. However, no explicit compatibility with Samsung Health or the Samsung Galaxy Watch 8 is mentioned in the available information.

Samsung Health supports a selection of activity trackers and sensors from various manufacturers, but the Suunto Smart heart rate belt is not included in the official list of compatible accessories. The Galaxy Watch 8 can connect Bluetooth heart rate belts, but it is not guaranteed that all Bluetooth heart rate belts will work without special support or app compatibility.

To summarise:
- The heart rate belt uses Bluetooth Smart and is compatible with Suunto watches and apps.
- Official compatibility with Samsung Health or the Galaxy Watch 8 is not documented.
- A connection may be technically possible, but is not guaranteed or officially supported.

For a binding statement, we recommend contacting Samsung or Suunto directly or searching for the device in the Samsung Health app under Accessories.