How to pair an external heart rate monitor to Apple WatchHow do I pair an external heart rate monitor to Apple Watch? You'll need to head into your Bluetooth settings.
While your Apple Watch's heart sensor should perform just fine for passive monitoring, anyone training or in need of much more accurate data may be better off with a heart rate monitor strap. Luckily, the Apple Watch supports connecting a Bluetooth enabled strap or monitor. Once you pair it within Settings, you're ready to go!
Keep in mind that while the Apple Watch should support many Bluetooth heart rate monitor straps, it may not support all of them: Straps that use older legacy Bluetooth technology may not be recognized, as was the case with an older Garmin strap I had laying around. Newer straps should work just fine, however. If your Apple Watch can't connect but locates your monitor, make sure you haven't accidentally paired with your iPhone. From my testing, you can't pair an external monitor to two devices at once.
How to pair your external heart rate monitor wit...
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How to pair an external heart rate monitor to Apple Watch
