More about the product
The Apple Watch Series 8 combines powerful safety features, advanced health sensors, and long-lasting performance. It introduces a dual‑sensor temperature system for more accurate wrist‑temperature readings, enabling retrospective ovulation estimates and enhanced cycle tracking. With Crash Detection, it can sense severe car accidents and automatically call for help if needed. A Low Power Mode extends battery life up to 36 hours by disabling select features. Running on watchOS 9, it offers richer health insights including sleep stages, an AFib History tracker, and a full Medications app. Built with a durable Always-On Retina display, water resistance (50 m), and recycled materials, the Series 8 is designed for style, health, and sustainability.
Temperature Sensing (Women’s Health)
Uses a two-sensor design — one sensor on the back near the skin, and another under the display — to reduce bias from outside environment.
Samples wrist temperature during sleep every 5 seconds and can detect changes as small as 0.1 °C.
Helps with retrospective ovulation estimates and improves period predictions in the Health app.
Crash Detection & Safety Features
Has a high‑G accelerometer (up to 256 G), advanced gyroscope, and motion sensors to detect severe car crashes.
If a crash is detected and the user is unresponsive, the watch can automatically call emergency services and notify emergency contacts.
Includes Fall Detection and Emergency SOS features.
Low Power Mode
New low-power mode extends battery life up to 36 hours by disabling or limiting some features (like Always-On display, auto workout detection).
Despite saving power, many core functions (like activity tracking and fall detection) still work.
Display & Durability
Always-On Retina LTPO OLED display.
Size options: 41 mm and 45 mm.
High brightness (up to 1,000 nits).
Water resistance to 50 meters (WR50) and IP6X dust resistance.
Ceramic and sapphire crystal backing for durability.
Performance
Powered by the S8 SiP, a 64-bit dual-core processor.
Includes Apple’s W3 wireless chip and U1 (Ultra Wideband) chip.
Storage: 32 GB.
Connectivity: GPS (L1), GLONASS, Galileo, QZSS, BeiDou; LTE/UMTS on cellular models; Wi-Fi; Bluetooth 5.3.
Battery
Standard: up to 18 hours of usage.
Uses a USB-C magnetic fast-charging cable.
Health & Fitness Tracking
Blood oxygen (SpO2) sensor.
Electrical heart sensor for ECG.
Always-on altimeter, compass, accelerometer, gyroscope, ambient light sensor.
Enhanced workout features with watchOS 9: Heart Rate Zones, custom workouts, alerts for pace/power/heart rate/cadence.
Swimming improvements: Kickboard detection for pool workouts, and SWOLF tracking.
Sleep & Health Insights (watchOS 9)
Sleep stages: Tracks REM, Core, and Deep sleep using accelerometer + heart rate.
AFib History: Tracks time in atrial fibrillation, weekly trends, and correlation with lifestyle factors like sleep, alcohol, and exercise.
Medications app: Track medications, vitamins, supplements; set reminders and view interaction warnings.
Watch Faces & UI
New watch faces in watchOS 9: Lunar, Metropolitan, Playtime, and Astronomy.
Redesigned Compass app: set waypoints, see elevation, latitude/longitude, and use “Backtrack” to retrace steps.
Sustainability
Made with recycled materials: 100% recycled aluminum in the case, recycled tungsten, rare-earth elements, etc.
Packaging is mostly fiber-based, minimizing plastic.
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