I Tested the Apple Watch's New Heart Rate Sensor to See If It's Really Better Than Garmin's - Lifehacker

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Apple caught my attention with their claim that the Apple Watch Series 12 and Ultra 4 have the “most accurate heart rate in a wearable. ” It’s hard to make a really accurate heart rate sensor, and in my experience, Apple hasn’t had a great track record in that area. Early models of the Apple watch had better sensors than most wearables at the time, so Apple developed a reputation for good accuracy. Apple Watch in red, Garmin in purplish, chest strap for reference in gray.

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