The Apple Watch Series has evolved dramatically since its debut. Among its most transformative entries, the Apple Watch Series 4 marked a pivotal moment. Released in September 2018, this model brought substantial upgrades in design, health features, and performance. Its enhancements weren’t just iterative—they redefined what a smartwatch could do. With a larger display, improved sensors, and life-saving health tracking, the Series 4 became a turning point in Apple’s wearable journey.
What Is the Apple Watch Series 4？
Design Overhaul: Bigger, Bolder, Brighter
One of the most visible upgrades of the Apple Watch Series 4 was its design. Compared to earlier models, the Series 4 featured a 30% larger display with rounded corners. This made the watch more immersive and allowed for more detailed watch faces. Apple achieved this by reducing the bezels while retaining the same overall case size options—40mm and 44mm. The screen used LTPO OLED Retina technology, providing bright visuals with lower power consumption. The Digital Crown also received a redesign, now equipped with haptic feedback, delivering subtle tactile responses when turned.
Hardware and Performance Improvements
Inside the Apple Watch Series 4, Apple introduced the S4 chip, a dual-core 64-bit processor that was twice as fast as its predecessor. This improvement allowed for smoother animations and faster app load times. A new speaker was 50% louder, and the microphone was moved to reduce echo, enhancing call clarity. These hardware changes made Series 4 not only quicker but also more enjoyable to use in daily life.
Battery Life and Charging
The battery life remained consistent with previous models—up to 18 hours on a full charge. However, thanks to improved efficiency in the processor and display, real-world performance often exceeded expectations. The watch still used a magnetic charging puck, and full charging took about 1.5 to 2 hours.
Revolutionizing Health Monitoring
The most groundbreaking changes in the Apple Watch Series 4 centered on health features. For the first time, the watch included an electrical heart sensor that could take an electrocardiogram (ECG). Users could detect signs of atrial fibrillation (AFib) by simply placing their finger on the Digital Crown. This feature received FDA clearance in the United States, marking a new chapter in consumer health tech.
Fall Detection and Emergency SOS
Series 4 also introduced fall detection. If the user took a hard fall and remained motionless for 60 seconds, the watch would automatically call emergency services. This feature was especially significant for elderly users and those with health conditions. Emergency SOS could also be triggered manually, giving peace of mind in dangerous situations.
Improved Heart Rate Monitoring
While heart rate monitoring wasn’t new to Apple Watches, the Series 4 added more precision. It could notify users of unusually high or low heart rates and irregular rhythms. These alerts were potentially life-saving, providing early warning signs that might otherwise go unnoticed.
watchOS and Ecosystem Integration
The Apple Watch Series 4 ran on watchOS 5 at launch. This operating system brought new features such as Walkie-Talkie mode, automatic workout detection, and enhanced notifications. Integration with the broader Apple ecosystem was seamless. Users could send messages, receive calls, and control smart home devices using Siri, all from their wrist. The Series 4 turned the watch from a peripheral device into a central hub of digital life.
Activity Tracking and Workout App
Fitness tracking remained a strong suit of the Apple Watch. Series 4 continued to track calories, steps, distance, and workouts with high accuracy. It introduced Yoga and Hiking as new workout types. GPS and altimeter sensors were also improved, making the watch ideal for runners, hikers, and cyclists.
Customization and Bands
Apple offered a variety of bands and case finishes for the Series 4. Stainless steel, aluminum, and even gold-colored finishes were available. Most importantly, bands from previous models were still compatible. This supported Apple’s sustainability goals and provided continuity for long-time users.
Comparison With Modern Models
While newer models like the Apple Watch Ultra offer even more advanced features, the Series 4 remains relevant. Its ECG and fall detection are still considered essential. Many users continue to wear the Series 4 due to its dependable performance and elegant design.
Apple Watch Series 4 vs Series 3
The leap from Series 3 to Series 4 was more significant than most generational upgrades. Series 4 offered a larger display, a faster processor, and advanced health features. For anyone comparing the two, the Series 4 clearly delivered better value.
Apple Watch Series 4 vs Series 5
Series 5 added an always-on display and a built-in compass, but otherwise kept the core features of Series 4. For many users, these additions weren’t essential, making Series 4 a more cost-effective choice even after the newer model launched.
Who Should Use the Apple Watch Series 4?
The Apple Watch Series 4 is ideal for health-conscious users, busy professionals, and anyone seeking a reliable smartwatch. Its ECG and fall detection features make it especially useful for older adults. At the same time, its fitness tracking and sleek design appeal to younger users. Thanks to its performance and durable design, it also works well for athletes and outdoor enthusiasts.
Longevity and Software Support
Apple supported the Series 4 with watchOS updates for several years. It continued to receive updates through watchOS 9, offering new features even years after release. Though it no longer gets the latest updates, the hardware remains functional and secure for most everyday uses.
Pricing and Value Over Time
At launch, the Series 4 started at $399 for the GPS model and $499 for the GPS + Cellular version. Prices have since dropped on the secondary market. For users looking for a budget-friendly option in the Apple Watch ecosystem, the Series 4 remains a solid pick.
Conclusion
The Apple Watch Series 4 was more than an upgrade—it was a transformation. It set a new standard for smartwatches with a fresh design and serious health features. Though it’s no longer the newest model, it continues to be a favorite for many users. Its role in shaping future models is undeniable. As smartwatches become more essential in daily life, the Series 4 remains a benchmark of innovation and practicality. For those entering the Apple Watch world or seeking a dependable upgrade, the Series 4 is still worth considering.
Related Topics: