Just when we thought chest straps were the gold standard, the Apple Watch Ultra 2 has outperformed even 'medical grade' wearables in a new data scientist-led test. Its heart rate and sleep tracking are now proven to be more accurate than most rivals, including the hyped Whoop. Is this the moment wrist tech finally surpasses specialized gear, or are there still hidden trade-offs? #Tech #AppleWatchUltra2 #WearableTech