In summary: Pixel Watch 4 for sweetness and stylistic continuity; Galaxy Watch 8 for functional sobriety and the “neutral” port all day.
Gemini on board, accessible with a simple gesture (“talk directly to the watch”). Contextual responses, Smart folds, transversal assistant logic which navigates between messages, agenda, directions. (blog.google)
A personal wellness coach fed by AI, designed with the Fitbit team. Scheduled in preview in the United States from October; The objective: Proactive coaching based on your real data (sleep, activity, load). (blog.google)
One UI Watch 8 (on Wear OS 6) emphasizes lifestyle with integrated coaching modules: BedTime Guidance (Optimal bedtime via circadian rhythm analysis), Running coach (personalized training plan after a 12 -minute test), Gemini integration for assistance. (Kingofgeek.com, News.samsung.com)
Prevention and “Readiness”: energy score, vascular load, and especially the antioxidant index - 5 s measurement of skin carotenoids via the bioactive sensor, to illuminate your nutritional choices. (News.samsung.com)
Two philosophies, two benefits: Google pushes a conversational assistant present in your micro-moles; Samsung anchors AI in health routine (sleep, race, prevention).
Dual-Frequency GPS: cleaner traces in dense town and under plant cover. Automatic detection and classification of activities, 50+ modes, and more precise sleep (improved ML models). (blog.google)
SOS by satellite on the LTE versions: sending emergency alerts outside the network. Note: launch first in the United States, international deployment to be confirmed. (Blog.google, Numerama.com)
Real use: Vélotaf route with tunnels and tight streets? The double GPS secures your metrics. In improvised trail, the assurance of help even without a network (LTE model, covered area).
Sleep in priority: Circadian analysis (BedTime Guidance) to stall your bedtime, regularity coaching, and detailed follow -up of the phases. (Kingofgeek.com)
Running: 12-minute test to calibrate your level (1 to 10) and generate a multi-sex plan, with real-time advice during outings. (News.samsung.com)
Antioxidant index and vascular load: new metrics to qualify hygiene of life and recovery, in addition to the ECG and conventional cardio tools. (News.samsung.com)
Real use: If your goal is to sleep better to perform the next day, the watch gives you an hour target and reminds you of holding it; If you run, it structures progress without over-engineering.
Pixel Watch 4: Pre-order from August 20, 2025, shelving at October 9, 2025. European prices announced: 41 mm Wi-Fi 399 € / LTE 499 €; 45 mm Wi-Fi € 449 / LTE € 549. (blog.google)
Galaxy Watch 8: Available from July 25, 2025. Prices France press releases: 40 mm BT 379.99 € / 4G 429.99 €; 44 mm BT 409.99 € / 4G 459.99 €. (News.samsung.com, phonandroid.com)
| Criteria | Google Pixel Watch 4 | Samsung Galaxy Watch 8 |
|---|---|---|
| Design watch | Bomotic glass, “pebble” look, aluminum housing 41/45 mm | Fine “Cushion” design, 40/44 mm case |
| Screen | Amoled LTPO, refined edges | Super amoled, reinforced readability in the sun |
| System | Wear OS 6 + Google services | Wear OS 6 + One Ui Watch 8 |
| Assistant/AI | Gemini on-Device, “Talking directly to the watch”, Smart folds | Gemini integration, BedTime Guidance, Coach Running, Energy/Readiness |
| Health/sleep | Sleep + precise (ML models), temp. cutaneous, ECG | Guided sleep (circadian rhythm), ECG, vascular load |
| Fitness | Double frequency GPS, 50+ modes, self-determination | Personalized racing plans, real -time coaching |
| Prevention | Sos by satellite (LTE, supported areas) | Antioxidant index, daily prevention indicators |
| Autonomy (type use) | One to two days depending on the settings and AOD | One to two days depending on use profiles |
| Starting price (FR) | € 399 (41 mm Wi-Fi) | € 379.99 (40 mm Bt) |
| Available (FR) | October 9, 2025 | July 25, 2025 |
The IA and health characteristics are sourced in Google and Samsung; Availability/price France confirmed by specialized press releases and media. (blog.google, news.samsung.com, phonandroid.com)
You live in the Google ecosystem, you dictate your messages by walking, you like the idea of an AI coach who feeds on your data to suggest the right action at the right time: the Pixel Watch 4 is more “personal assistant” than “dashboard”. The dense urban journeys, the bicycle in town, the occupied hand microphone go to it like a glove. (blog.google)
You are looking for a clear setting to sleep better, run better, recover better: the Galaxy Watch 8 puts practical milestones (bedtime, racing plan, simple preventive measures to understand). It is suitable for those who want useful routines more than gadgets. (Kingofgeek.com, News.samsung.com)
Navigation and readability: the pixel, slightly more “jewel”, blends better under a dressed wrist; The flatter galaxy is forgotten on a multi-reunions day or a sweating training.
Safety: If you move in mountains or white areas, the SOS satellite option of the pixel (LTE model, geographic availability to follow) is a reassuring brick. On the Samsung side, the “preventive” logic aims rather for the long term. (Numerama.com, News.samsung.com)
Coaching: Google promises an AI coach who adapts to your context; Samsung structures your lifestyle with stages and appointments. In both cases, the watch does not replace the effort - it makes it more intelligible.
Where and when: Galaxy Watch 8 has already been available in France since July 25, 2025; Pixel Watch 4 arrives in store on October 9, 2025. (News.samsung.com, blog.google)
Budget: on equivalent size, Samsung starts slightly lower. Count above all the right format (40/41 mm for discretion; 44/45 mm for readability) and connectivity (LTE if you want to leave the phone). (phonandroid.com, blog.google)
Wrist test: Test the comfort of the attachment and the glass curvature. The Google pebble seduces, but requires protection if you are clumsy; The galaxy, more flat, goes better under a tight round.
To deepen: Consult our dedicated pages the passion time for key points, colors and advice of choice: Galaxy Watch 8 - Characteristics and Pixel Watch 4 - All.
If your priority is an assistant that fluidifies your days, the Pixel Watch 4 checks the boxes. If you want a clear setting to sleep better, run better and recover better, the Galaxy Watch 8 is essential. Neither overplayed; They just put AI in the service of fairer habits.
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