Samsung's Magical 4 Minute Cycling Test: Does it actually work?

Last week Samsung touted a pretty bold claim in the middle of their keynote for their newest smartwatch: They could determine your cycling FTP (functional threashold power, the max power you can maintain for roughly an hour). To do this, you’d need a cycling power meter, 4 minutes, and…well…that’s it.Thus, I decided to give this a whirl. Turns out, the fine print is pretty important here.I’m going to save you many hours of troubleshooting, searching, and otherwise trying to figure out how on earth to do this test. Despite this being one of a handful of new features highlighted for the new watch in their keynote, there’s virtually no documentation on it. And by ‘virtually’, I mean ‘absolutely none at all’. The core of my challenge was figuring out first how to pair a power meter to the watch, and then second, how to trigger an FTP test.

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