Apple Watch History: Series 0 to Series 10 (2015-2024) – A Complete Timeline
- From Series 0 to Series 10, the Apple Watch has come a long way—let’s explore its evolution and changes.
- Series 10 just dropped, but how does it stack up against the previous models? Find out here.
- The Apple Watch story continues in 2024—bigger screens, faster charging, and plenty of rumors for what’s next!
Since its introduction in 2015, the Apple Watch has redefined what a smartwatch can do, continually setting higher standards for the industry. From tracking fitness to making calls and even monitoring vital health stats, the Apple Watch has evolved into an essential device for millions. Here's a look at the journey of Apple’s groundbreaking wearable from its inception to its most recent models.
2015: The Original Apple Watch (Series 0)
Apple's debut smartwatch hit the market in April 2015. Dubbed Series 0, this model laid the foundation for modern smartwatches, introducing a sleek rectangular design in two sizes. While other brands had previously attempted smartwatches, Apple’s entry was revolutionary. Not only was it more stylish and practical, but it also brought advanced features like notifications, health tracking, and integration with the iPhone.
However, the first-generation Apple Watch wasn’t perfect. Early adopters often complained about its sluggish performance. Tasks took so long to load that users frequently opted to pull out their phones instead. Furthermore, Apple’s decision to release premium versions of the watch, some priced over $10,000, raised eyebrows.
Photo via Apple Inc. // The Apple Watch Series 0 in gold.
2016: Series 1 & Series 2 – Improving Speed and Functionality
In September 2016, Apple launched both the Series 1 and Series 2 watches. Series 1, priced at $269, introduced a faster dual-core processor, significantly addressing the performance issues of the original.
Series 2, released simultaneously, brought major upgrades. It featured built-in GPS, allowing users to track their activities without carrying their iPhones, and was waterproof up to 50 meters, making it suitable for swimming. The introduction of the "Breathe" app, designed to help users manage stress through breathing exercises, was another popular addition.
Key Features in Series 1 & 2:
- Dual-core processor (50% faster than Series 0)
- Built-in GPS (Series 2)
- Waterproofing (Series 2)
- Breathe app (Series 2)
Photo via CNET // Apple Watch Series 1 (left) and Apple Watch Series 2 (right).
2017: Series 3 – Enter Cellular Connectivity
In 2017, the Apple Watch truly stepped into the future with the launch of Series 3. This version allowed users to make calls, send texts, and stream music independently of their iPhone. With its faster S3 processor, additional RAM, and the introduction of Siri, Series 3 became a fully functional, standalone device.
For outdoor enthusiasts, the Series 3 included a barometric altimeter, making elevation tracking possible during activities like hiking. Despite the additional features, the watch remained efficient, maintaining its signature 18-hour battery life.
Highlights of Series 3:
- Cellular connectivity
- S3 processor (faster performance)
- Barometric altimeter for elevation tracking
- Siri integration
Photo via Business Insider // Apple Watch Series 3.
2018: Series 4 – Redesigned and Focused on Health
By 2018, Apple had solved most of the performance issues that plagued earlier models. The Series 4 introduced a larger screen, reduced bezels, and a sleeker design. Perhaps the most notable feature was the introduction of ECG (electrocardiogram) monitoring, allowing users to track their heart health right from their wrist.
However, what set Series 4 apart was the addition of Fall Detection. Using built-in accelerometers, the watch could detect a sudden fall and, if the user remained unresponsive, automatically contact emergency services. This feature was a lifesaver for many and positioned the Apple Watch as a “health guardian.”
Noteworthy Features in Series 4:
- Larger screen size (44mm/40mm)
- ECG monitoring
- Fall Detection
Photo via Apple Inc. // The Apple Watch Series 4.
2019: Series 5 – Always-On Display
One of the most requested features finally arrived in 2019 with the launch of Series 5: the Always-On Display. Thanks to LTPO (low-temperature polysilicon and oxide) technology, the screen could stay on at a low refresh rate, displaying the time at all times without draining battery life. Additionally, Series 5 added a built-in compass and improved storage capacity. Despite these enhancements, battery life remained consistent at 18 hours.
Photo via Apple Inc. // The Apple Watch Series 5.
2020: Series 6 & SE – Advancing Health Monitoring
In 2020, Apple launched both the Series 6 and a more affordable SE version. Series 6 focused heavily on health features, introducing SpO2 (blood oxygen) monitoring and more advanced sleep tracking. This model also came with a brighter screen and the faster S6 processor.
The Apple Watch SE was introduced as a budget-friendly option, starting at $280. It lacked some advanced features like ECG and SpO2 but offered solid performance with the same S5 chip as Series 5.
Series 6 Highlights:
- SpO2 sensor for blood oxygen levels
- Advanced sleep tracking
- New color options (red and blue)
Photo via CNET // The Apple Watch Series 6.
Apple Watch SE Features:
- Affordable price point
- No ECG or SpO2
- Cellular option available
Photo via Apple Inc. // The Apple Watch SE (2020).
2021: Series 7 – Bigger Screen, Faster Charging
Series 7 brought a larger screen thanks to thinner bezels and slightly increased case sizes (41mm/45mm). This change was subtle but made a noticeable difference, allowing more text to fit on the display and improving overall user experience. Durability was also enhanced with a thicker front crystal, and charging speeds were improved by 33%.
Major Updates in Series 7:
- Larger, edge-to-edge display
- Faster charging
- Full-size keyboard for typing
Photo via CNET // The Apple Watch Series 7.
2022: Series 8, SE 2022 & Ultra – Expanding the Lineup
In 2022, Apple released not one but three new watches: the Series 8, Apple Watch SE (2022), and the brand-new Apple Watch Ultra.
Series 8 introduced Crash Detection, which works similarly to Fall Detection but is tailored for car accidents. It also added temperature monitoring, designed to assist with sleep analysis and ovulation tracking for women.
The standout release, however, was the Apple Watch Ultra. This rugged watch was engineered for extreme activities, featuring a chunkier titanium frame, sapphire crystal display, and water resistance up to 100 meters. Its larger battery could last up to two days, making it the ideal companion for outdoor adventures.
Photo via Tom's Guide // The Apple Watch Series 8 (left) and the Apple Watch SE (2022).
Apple Watch Ultra Highlights:
- 49mm display (largest to date)
- Water resistance up to 100 meters
- Dual-band GPS and dive computer capabilities
- 86-decibel emergency siren
Photo via Apple Inc. // The Apple Watch Ultra (2022).
2023: Series 9 & Ultra 2 – Gesture Control and Brighter Displays
The most recent models, Series 9 and Ultra 2, were unveiled in September 2023. While these updates didn’t bring groundbreaking new features, the introduction of gesture controls through the "Double Tap" feature stood out.
Photo via PhoneArena // The Apple Watch Series 9 with Double Tap.
Users can now control their watch by tapping their thumb and index finger together, which detects muscle movements to trigger actions like answering calls.
Both models received upgraded displays, with Series 9 reaching 2000 nits and Ultra 2 pushing the brightness even further to 3000 nits.
Photo via Apple Inc. // The Apple Watch Ultra 2.
2024: Series 10 – Bigger and Faster Charging
In 2024, Apple introduced the Apple Watch Series 10, a milestone marking the tenth iteration of their popular wearable. While this year’s update wasn’t the groundbreaking redesign many had hoped for, Apple made some notable refinements to enhance user experience.
One of the key updates was the larger case sizes. The Series 10 comes in 42mm and 46mm, a slight increase over the previous 41mm and 45mm models, offering more screen real estate without altering the overall footprint. Another change was in materials, with the titanium variant replacing the stainless steel option, offering a lighter and more durable premium option.
Charging speed saw a significant boost, with the Apple Watch Series 10 able to reach 80% charge in just 30 minutes, improving on the Series 9’s 45-minute charge time. For those who rely on their watch throughout the day, this improvement is a welcome convenience.
Apple also introduced subtle improvements in display technology, enhancing viewing angles and allowing music playback via the loudspeakers, a small but useful tweak. The addition of a water temperature sensor and a depth gauge rounds out the new features, targeting users who engage in aquatic activities.
Photo via Apple Inc. // The Apple Watch Series 10 in black and gold.
Apple Watch Series 10 Highlights:
- New 42mm and 46mm sizes
- Titanium replaces stainless steel for premium models
- Faster charging (80% in 30 minutes)
- Improved viewing angles on display
- Water temperature sensor and depth gauge for swimmers and divers
2025: Series 11 – Rumors of New Health Features and Display Upgrades
Looking ahead to 2025, anticipation is building for the Apple Watch Series 11. While details are still scarce, rumors suggest that Apple could be focusing on health features that have been in development for years.
One of the most exciting potential updates is blood pressure monitoring, a long-awaited feature. Apple has faced technical challenges with this feature, but if it comes to fruition, it could be a game-changer for health tracking. Additionally, some insiders believe the Series 11 could introduce non-invasive glucose monitoring, though this breakthrough may not arrive until a later model.
There’s also talk of the MicroLED display making its debut with the Series 11. MicroLED promises to deliver even brighter and more energy-efficient screens compared to the current OLED technology, offering users better visibility in all lighting conditions. If included, this would be the most significant display upgrade since the introduction of LTPO panels.
Design-wise, the Series 11 is expected to maintain the overall aesthetic of its predecessors, but with slight refinements to its bezels and possibly a magnetic band attachment system, enhancing usability.
Photo via ZDNet // What's next for Apple Watch Series 11?
Apple Watch Series 11 Rumored Highlights:
- Potential blood pressure monitoring
- Possible MicroLED display for enhanced brightness and energy efficiency
- Continuation of Apple’s focus on health tracking features
- Minor design tweaks with thinner bezels and magnetic bands
Apple Watch: A Look Ahead
As we move forward, Apple continues to push the boundaries of what a smartwatch can do. Whether it's through groundbreaking health features or enhanced connectivity, the Apple Watch remains one of the most innovative products on the market.
With over 100 million units sold to date, it’s clear that Apple’s wearable device is here to stay, continually shaping the future of personal tech.
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