The Apple Watch Ultra 4 doesn't reinvent the wheel, but it perfects the engine. By pairing the Series 12's smartest features – the faster S11 chip, instant Siri AI responses, and drastically improved heart rate sensing – with an astounding 74 hours of real-world battery life, Apple has built an absolute endurance machine. The Ultra 4 starts at $799 and is worth the splurge if you need a relentless, dive-ready smartwatch that can survive a full weekend off-grid without touching a charger. Head to PCMag for our full review. #FirstLook #AppleWatchUltra #Apple #TechReview #Wearables