Samsung's latest iteration, the Galaxy Watch 9, has just been revealed, sparking curiosity about its performance enhancements compared to its predecessor, the acclaimed Galaxy Watch 8. The Watch 8 currently holds a prestigious position as the top choice in many smartwatch rankings, making the comparison between these two devices particularly relevant for consumers contemplating an upgrade or a new purchase.
Unveiling the Advancements: Galaxy Watch 9 vs. Watch 8
On July 23, 2026, Samsung officially announced the Galaxy Watch 9, available for pre-order with an official launch slated for August 7th. The new model debuts with a starting price of £349. In contrast, the Galaxy Watch 8, initially priced at £299, is expected to see further price reductions following its successor's release, making it an increasingly attractive option for budget-conscious buyers.
A primary enhancement in the Galaxy Watch 9 is its upgraded power source, boasting a 390mAh battery, a notable increase from the Watch 8's 325mAh. Samsung projects this will translate into a 20% improvement in battery longevity. Given that the Watch 8 typically offered around 40 hours of use, this upgrade could potentially extend the Watch 9's endurance to a comfortable two days, though real-world testing will confirm this.
Under the hood, both the Galaxy Watch 9 and the Ultra 2 are equipped with Qualcomm's advanced Snapdragon Wear Elite processor. This cutting-edge chip promises seamless performance across various functionalities, from fitness tracking to application launches. A significant highlight is the processor's integrated NPU, a first for wearable platforms, which facilitates hands-free Gemini support on the Watch 9. While the Watch 8 is not considered sluggish and supports Gemini without issues, the new processor in the Watch 9 represents a leap in processing power and efficiency.
In terms of health and fitness monitoring, the Galaxy Watch 9 introduces an innovative heart health score. This metric analyzes three daily factors—sleep duration, BMI, and vigorous activity levels—to provide personalized guidance for improving cardiovascular health. Both models, however, are robust health trackers, featuring an energy score, sleep apnea detection (which notably helped a Mobile Editor identify his sleep apnea), blood pressure monitoring, an ECG app, and cycle tracking, establishing them as comprehensive wellness companions.
Durability is a shared strong suit, with both the Watch 9 and Watch 8 carrying a 5ATM water resistance rating and an IP68 dust and water resistance certification. This ensures both devices can withstand daily wear and tear, including swimming, though the Ultra 2 offers superior 10ATM resistance. Both smartwatches also feature a peak brightness of 3000 nits. While the Watch 9 appeared marginally brighter and more vibrant in side-by-side comparisons, the Watch 8's display was already deemed sufficiently bright for outdoor visibility.
The arrival of the Galaxy Watch 9, with its enhanced battery, powerful Snapdragon Wear Elite processor, and new health tracking features, positions it as an excellent choice for general users. However, for current Watch 8 owners, the impetus to upgrade might be minimal unless extended battery life or the specific heart health score are critical. New smartwatch buyers might find the Watch 8, especially with impending price adjustments, to be a highly cost-effective and capable device.
