Apple Watch Ultra 4 Adds 50-Hour Battery and 0-10 Readiness Score as HR Claims Face Scrutiny
Far Left20%
Left60%
Center20%
Apple Watch Ultra 4 Review: S11 Chipset, Enhanced HR Sensor, Readiness Score, and Audio Intelligence EvaluatedI Wore the Apple Watch Ultra 4 for 74 Hours Straight. It's an Absolute Battery Beast | PCMagI've spent a week with Apple Watch Ultra 4 – and it's shaping up to be a serious endurance watch | TechRadarApple Watch Ultra 4 Review: This Battery Beast Lasts Longer Than Ever - Review 2026 - PCMag AustraliaTom's Guide Reviews Apple Watch Ultra 4: Improved Health Sensors, Battery, and AI FeaturesApple Watch Ultra 4 Review: Longer Battery, New Heart Rate SystemApple Watch Ultra 4 First Run: New Ultra wants to get you ready to runApple Watch Ultra 4 Review: Health Upgrades Now, Personal AI SoonThe 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 drasticallyApple Watch Ultra 4 Review - Wear Test of the $799 SmartwatchI tested the Apple Watch Ultra 4, and these 4 upgrades matter most - ZDNETApple Watch Series 12 and Ultra 4 review: More personal than ever before - 9to5Mac