Key Takeaways
- The Apple Watch Ultra 4 starts at Rs 1,09,900 in India, with pre-orders open and retail availability beginning September 18 in natural and black titanium finishes.
- It introduces a Readiness Score that synthesizes recent training load, vitals, and sleep into a daily 0-10 score with plain English nudges for recovery.
- Heart rate sensing is upgraded with fresh optical and electrical sensors taking readings every five seconds, alongside significantly increased heart rate variability measurement frequency.
Apple has finally put a number on how you are feeling, and that number now lives on your wrist. The Apple Watch Ultra 4 price in India starts at Rs 1,09,900, with pre-orders open today and a genuinely loaded upgrade list attached to it, including a new Health Sensing System, the fastest and most accurate heart rate readings Apple has ever pulled off on a watch, and a battery big enough to survive an actual 100-mile race without a top-up. It goes on sale from September 18 in natural and black titanium finishes, arriving right in the middle of Apple’s busiest hardware week of the year.
In This Article
The Apple Watch Ultra 4 Readiness Score Is New For Apple, Not For Wearables
The headline health feature here is readiness, a daily 0 to 10 score built from a user’s recent training load, vitals and sleep, paired with a plain English nudge such as Recover, Pace Yourself, Ready or Go For It. It sounds refreshingly simple on paper, and Apple has clearly leaned on its long-running Apple Heart and Movement Study to build the scoring model with actual exercise scientists rather than guesswork.
What is worth noting, and what Apple’s own marketing will not exactly shout about, is that this concept is not new to the wearable world. Oura has run a Readiness Score on its rings for years, and Whoop built its entire pitch around a similar Recovery Score, both synthesising sleep, HRV and strain into one morning number that tells you whether to push hard or take it easy. Apple Watch Ultra 4 features essentially bring that ring and wristband category logic onto a mainstream smartwatch, joining rivals like Samsung’s Galaxy Watch Ultra2, which GadgetBridge tested extensively, in leaning harder into round-the-clock recovery tracking rather than just counting steps.
Heart Rate Sensing Gets Its Biggest Jump Yet
Apple Watch Ultra 4 heart rate accuracy is where the new S11 chip and Health Sensing System do their heaviest lifting, combining fresh optical and electrical heart sensors to take a reading every five seconds, all day long, a meaningful jump from the periodic sampling older Apple Watches relied on. Apple says a study spanning more than a thousand participants showed this setup delivering the most accurate heart rate sensing of any wearable it tested against, a fairly bold claim that will likely get put through its paces by independent reviewers soon enough.
Heart rate variability, generally considered one of the more useful stress and recovery signals available on a wrist, is now measured up to 24 times more often than before. Apple Watch Ultra 4 splits this into two separate readings, a recovery-focused HRV number for daily stress signals and a broader HRV figure meant for long-term cardiovascular insight, viewable through a new section in the Heart Rate app alongside a redesigned overnight and daytime vitals view. The pedometer has also been rebuilt using new machine learning models, which Apple claims now makes this the most accurate step counter of any smartwatch on the market, complete with a fresh real-time Steps face complication.
Read Also: Apple’s AirPods 5 Launched: It Turned Noise Cancellation From a Premium Perk Into the Default
A Battery That Might Actually Outlast Your Weekend
Apple Watch Ultra 4 battery life is where the Ultra name finally earns its keep. Everyday use now stretches to roughly 50 hours, climbing to 84 hours in Low Power Mode, and a 15-minute charge adds back up to 18 hours of use. For anyone actually training outdoors, the Extended Workout mode offers up to 25 hours of tracking with full GPS and heart rate, a 25 percent jump over the previous Ultra, while the new Max Extended Workout mode can stretch that to 45 hours with GPS readings taken every second, comfortably enough to cover a 100 mile ultramarathon on a single charge.
Audio Intelligence, Minus the Eavesdropping Anxiety
Apple is also introducing Audio Intelligence, a set of features arriving later this year that use the watch’s microphone to summarise conversations through a new Siri Recap tool and let users replay recent audio with Live Rewind. The privacy pitch is fairly specific here. Raw audio is processed inside a hardware-isolated Secure Exclave on the S11 chip and deleted immediately, nothing is stored as a recording, speakers are never identified, and Live Rewind triggers an audible chime plus a visible animation so people nearby know it has switched on. Both features stay opt in and can be toggled from Control Center. Alongside this, watchOS 27 brings Apple Intelligence-powered Siri AI to the wrist, giving Siri broader world knowledge and a better grasp of personal context.
Apple Watch Ultra 4 India Price, Colours and When It Ships
Beyond the Rs 1,09,900 starting price, the lineup includes new band colourways across the Trail Loop, Alpine Loop and translucent Ocean bands, plus an Apple Watch Hermès Ultra 4 with a wetsuit-friendly Grand H band and an ocean-themed watch face. watchOS 27 lands on September 14 for Apple Watch Series 9 and later, while the fuller Siri AI experience rolls out as an English-language beta the same day. The Apple Watch Ultra 4 release date for retail availability is September 18, arriving as part of a genuinely stacked Apple event that also covered the iPhone 18 Pro line and the company’s first foldable phone, both detailed in GadgetBridge’s full breakdown of Apple’s September 9 event and in its live rundown of what to expect on the day.
