The Apple Watch has evolved significantly between the 2019 Series 5 and 2022 Series 8. While both models feature always-on displays and premium materials, the Series 8 dominates with modern technology. I recommend the Apple Watch Series 8 for its superior crash detection and temperature sensing capabilities. The S8 chip delivers 70% faster performance than the aging S5 processor. These technological advancements transform the Series 8 into a comprehensive health and safety companion. Your investment in the Series 8 ensures years of software support and cutting-edge features.
Why Do I Recommend The Apple Watch Series 8?
The Apple Watch Series 8 represents a substantial upgrade over the Series 5 for several critical reasons:
- Advanced S8 Processor: The dual-core S8 chip processes tasks 70% faster than the S5. Conversely, the Series 5 struggles with complex apps and animations. This performance gap becomes increasingly noticeable with newer watchOS updates.
- Crash Detection Technology: Sophisticated gyroscopes and accelerometers detect severe car accidents automatically. In contrast, the Series 5 completely lacks this life-saving feature. The Series 8 contacts emergency services and shares your location instantly.
- Temperature Sensing Hardware: Dual-sensor technology tracks wrist temperature changes with 0.1°C accuracy. Meanwhile, the Series 5 offers no temperature monitoring whatsoever. This enables advanced cycle tracking and ovulation prediction capabilities.
- Blood Oxygen Monitoring: The SpO2 sensor measures oxygen saturation levels throughout day and night. However, the Series 5 cannot track blood oxygen at all. This data helps identify respiratory issues and sleep apnea patterns.
- Fast Charging Capability: The Series 8 reaches 80% charge in just 45 minutes. On the other hand, the Series 5 requires over two hours. This convenience saves precious time during busy mornings.
- IP6X Dust Resistance: The certified dust protection shields internal components from fine particles. Nevertheless, the Series 5 lacks any dust resistance rating. This matters significantly for outdoor athletes and construction workers.
- Enhanced Display Brightness: The Series 8 maintains 1000 nits even in direct sunlight. Comparatively, the Series 5 maxes out at 500 nits brightness. Reading notifications outdoors becomes dramatically easier with the Series 8.
- Extended Software Support: Apple continues updating the Series 8 through at least 2027. Conversely, the Series 5 likely loses support within two years. Longer support means more features and security updates.
Side By Side Comparison Chart – Apple Watch Series 5 vs 8
| Feature | Apple Watch Series 5 | Apple Watch Series 8 |
| Release Date | September 2019 | September 2022 |
| Processor | Apple S5 SiP | Apple S8 SiP (70% faster) |
| Display Type | Always-On LTPO OLED | Always-On LTPO OLED |
| Screen Size | 40mm (324×394) / 44mm (368×448) | 41mm (352×430) / 45mm (396×484) |
| Max Brightness | 500 nits (always-on) | 1000 nits (always-on) |
| Temperature Sensor | No | Yes (Dual sensor) |
| Blood Oxygen (SpO2) | No | Yes |
| ECG Capability | Yes | Yes |
| Heart Sensor | 2nd Generation Optical | 3rd Generation Optical |
| Crash Detection | No | Yes |
| Fall Detection | Yes | Yes |
| Compass | Yes | Yes |
| Fast Charging | No | Yes |
| Dust Resistance | No | IP6X Certified |
| Water Resistance | 50m (WR50) | 50m (WR50) |
| Case Materials | Aluminum, Stainless Steel, Titanium, Ceramic | Aluminum, Stainless Steel |
| Storage | 32GB | 32GB |
| RAM | 1GB | 1GB |
| Battery Life | Up to 18 hours | Up to 18 hours (36 with Low Power Mode) |
| Bluetooth | 5.0 | 5.3 |
| U1 Chip | No | No |
| Operating System | watchOS 6 (up to watchOS 10) | watchOS 9+ |
| Weight (40mm/41mm GPS) | 30.1g | 32g |
| Starting Price (Original) | $399 | $399 |
What Common Features Can Apple Watch Series 5 vs 8 Do?
Both smartwatches share foundational features that defined the modern Apple Watch experience. These similarities ensure core functionality remains excellent across both generations.
Always-On Retina Display
The revolutionary always-on display debuted with the Series 5 in 2019. You can glance at time and complications without wrist raising. The LTPO OLED technology intelligently reduces refresh rate to 1Hz. Both watches dim the screen when your wrist lowers. This preserves battery while maintaining constant information visibility. The display automatically brightens with wrist movement or taps. The Series 5 pioneered this feature that remains standard today.
ECG Functionality
Both models include electrical heart sensors for electrocardiogram generation. You simply rest your finger on the Digital Crown. The watch produces single-lead ECG readings in 30 seconds. The app analyzes heart rhythm for atrial fibrillation signs. FDA clearance validates the medical accuracy of both systems. Irregular rhythm notifications alert you to potential AFib episodes. The Series 5 and Series 8 share identical ECG hardware.
Water Resistance Rating
WR50 certification means 50-meter water resistance on both watches. You can swim laps, shower, and exercise in rain. The watches accurately track pool and open-water swimming workouts. Apple warns against scuba diving and high-velocity water activities. Saltwater requires rinsing to prevent long-term seal damage. Neither model offers superior water protection over the other.
GPS and Navigation
Built-in GPS tracks outdoor activities without iPhone dependency. Both watches map running, cycling, and hiking routes accurately. The compass feature helps orient direction during navigation. Location services work globally for worldwide travel tracking. GPS data syncs to the Health app automatically. Route mapping proves equally capable on both generations.
Digital Crown with Haptic Feedback
The rotating crown delivers tactile feedback during scrolling operations. You zoom maps and adjust volume with precision control. The haptic engine provides satisfying clicks with each rotation. Side button presses access favorite apps instantly. Both watches offer identical physical control mechanisms. The crown eliminates reliance on touchscreen-only navigation.
Wireless Connectivity
Bluetooth connects watches to iPhones and wireless headphones seamlessly. Wi-Fi enables notifications and streaming without iPhone proximity. Both models sync data to iCloud automatically. Cellular variants make calls and stream music independently. The connectivity experience remains consistent across both generations. Network speeds differ only slightly between Bluetooth versions.
Activity Tracking Fundamentals
Comprehensive workout modes cover dozens of activity types. The Activity Rings system motivates daily movement goals. Both watches recognize automatic workout detection capabilities. Heart rate tracking operates continuously during exercises. Calorie burn calculations use identical algorithms. The fundamental fitness tracking remains comparable between models.
Apple Pay Integration
Contactless payment systems work identically on both watches. You double-click the side button to authorize payments. Credit cards load securely into the Wallet app. Both models support transit card functionality in compatible cities. Payment authentication uses the same security protocols. Neither generation offers payment advantages over the other.
Common Features of Apple Watch Series 5 vs 8
| Feature | Apple Watch Series 5 | Apple Watch Series 8 |
| Always-On Display | Yes (500 nits) | Yes (1000 nits) |
| ECG App | Yes | Yes |
| Fall Detection | Yes | Yes |
| Compass | Yes | Yes |
| Altimeter | Always-on | Always-on |
| GPS | Built-in | Built-in |
| Water Resistance | 50m (WR50) | 50m (WR50) |
| Digital Crown | Haptic feedback | Haptic feedback |
| Side Button | Yes | Yes |
| Apple Pay | Yes | Yes |
| Siri | Yes | Yes |
| Activity Rings | Yes | Yes |
| Workout Detection | Automatic | Automatic |
| Sleep Tracking | Yes | Yes |
| Noise Monitoring | Yes | Yes |
| International Emergency | Yes (Cellular) | Yes (Cellular) |
| Cellular Option | Available | Available |
| Storage | 32GB | 32GB |
| RAM | 1GB | 1GB |
| Family Setup | Yes | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
A Detailed Comparison Of the Apple Watch Series 5 vs 8
Processor Performance and Speed
The Series 8 features the Apple S8 SiP with dual-core 64-bit architecture. This chip delivers 70% faster processing speeds than the S5. Apps launch instantly and multitasking flows smoothly without lag. The improved neural engine handles complex health calculations efficiently. Siri responds noticeably quicker on the Series 8. The processor optimization ensures smooth watchOS 10 performance.
The Series 5 runs the aging Apple S5 SiP processor. While adequate at release, it struggles with newer watchOS versions. App loading times increase noticeably compared to modern chips. Complex watch faces occasionally stutter during animations. The performance gap widens with each software update. Many users report sluggishness after upgrading to watchOS 10.
Crash Detection and Emergency Features
The Series 8 incorporates advanced crash detection using multiple sensors. Three-axis gyroscope measures up to 256 Gs of impact force. High dynamic range accelerometer samples motion 3,000 times per second. The watch automatically contacts emergency services after severe crashes. Your location coordinates share with emergency contacts instantly. The system distinguishes car crashes from everyday bumps accurately.
The Series 5 completely lacks crash detection hardware and software. It cannot detect car accidents or initiate emergency calls automatically. Users must manually activate SOS features during emergencies. This represents a significant safety disadvantage for daily drivers. The Series 5 offers only basic fall detection capabilities. Many buyers consider crash detection essential for modern watches.
Temperature Sensing Technology
The Series 8 includes dual-sensor temperature monitoring system. One sensor sits against your wrist on the back crystal. The display sensor compensates for environmental temperature variations. Together they detect changes as small as 0.1 degrees Celsius. Nightly temperature readings power advanced cycle tracking features. Women gain valuable ovulation prediction and fertility insights.
The Series 5 offers no temperature sensing capabilities whatsoever. Users cannot access cycle tracking features requiring thermal data. This limitation particularly affects women monitoring reproductive health. The hardware simply doesn’t exist in the Series 5 design. Apple introduced temperature sensing three years after Series 5. Budget constraints prevented retrofitting older models with new sensors.
Blood Oxygen Monitoring
The Series 8 measures blood oxygen saturation using SpO2 sensors. Red and infrared LEDs shine through wrist blood vessels. Light absorption patterns calculate oxygen level percentages. Background readings occur throughout the day automatically. You can also take on-demand measurements anytime needed. Low oxygen alerts may indicate respiratory or circulatory problems.
The Series 5 lacks blood oxygen monitoring hardware entirely. Users cannot access SpO2 data in the Health app. This feature matters greatly for altitude training and athletics. Sleep apnea detection also depends on oxygen tracking. The hardware omission makes Series 5 less comprehensive. Many users consider blood oxygen tracking essential for wellness.
Display Brightness and Visibility
The Series 8 maintains 1000 nits brightness in always-on mode. Outdoor visibility remains excellent even in direct sunlight. The screen intelligently adjusts brightness based on ambient light. Text and complications stay easily readable in all conditions. The improved brightness uses advanced display driver technology. Battery efficiency remains comparable despite doubled brightness output.
The Series 5 maxes out at 500 nits in always-on mode. Outdoor readability suffers noticeably in bright sunlight conditions. Users often shade the screen with their hands outside. The dimmer display particularly frustrates runners and cyclists. The older LTPO technology limits maximum brightness capabilities. Many users found outdoor visibility the Series 5’s biggest weakness.
Fast Charging Speed
The Series 8 supports fast charging with included USB-C cable. You achieve 80% charge in approximately 45 minutes. Full charging completes in under 60 minutes total. This proves invaluable when you forget overnight charging. The technology uses optimized power delivery for longevity. Fast charging works with 20W or higher USB-C adapters.
The Series 5 charges at standard speeds only. Full battery restoration requires approximately two hours. You cannot quickly top up before heading out. This becomes frustrating with inconsistent charging habits. The slower charging limits daily routine flexibility. Apple reserves fast charging for Series 7 and newer.
Dust and Environmental Protection
The Series 8 includes IP6X dust resistance certification. Fine particles and sand cannot penetrate the case. This protects internal components during outdoor activities. Construction workers and beach enthusiasts benefit significantly. The dust sealing adds no noticeable bulk. The certification required extensive engineering refinement.
The Series 5 lacks any dust resistance rating entirely. Fine particles can potentially enter through speaker grilles. Users in dusty environments face greater contamination risks. Beach and desert activities pose potential damage concerns. The Series 5 predates Apple’s dust resistance initiative. Only water resistance protects the Series 5 internals.
Software Support and Longevity
The Series 8 receives watchOS updates through at least 2027. Apple typically supports watches for five years minimum. You’ll receive new features and security patches regularly. The powerful S8 chip handles future updates smoothly. Your investment remains relevant for many years ahead. Resale value stays higher with extended support.
The Series 5 likely loses support within two years. WatchOS 10 may be its final major update. The aging S5 chip struggles with newer features. Many advanced functions require hardware the Series 5 lacks. Limited support reduces long-term value significantly. Consider this when weighing purchase decisions carefully.
Conclusion
The Apple Watch Series 8 clearly surpasses the aging Series 5 across critical dimensions. Its crash detection capability provides life-saving emergency response in accidents. Temperature sensing and blood oxygen monitoring deliver comprehensive health insights unavailable on Series 5. The S8 processor ensures smooth performance for years of updates ahead. Fast charging and improved brightness enhance daily convenience dramatically.
While the Series 5 pioneered the always-on display, technology has advanced significantly since 2019. Invest in the Series 8 for modern features, extended support, and superior safety capabilities. The performance gap will only widen as both watches age. Choose the Series 8 for maximum value and longevity.
FAQs
Q: Is the Apple Watch Series 8 much faster than the Series 5?
Yes, the Series 8 runs approximately 70% faster than the Series 5. The S8 chip handles apps and animations noticeably smoother. The performance difference becomes more apparent with newer watchOS versions. Series 5 users report increasing lag after software updates. The processor upgrade significantly improves overall responsiveness and multitasking capabilities.
Q: Does the Apple Watch Series 5 have crash detection?
No, the Series 5 completely lacks crash detection functionality. Only the Series 8 and newer models include this feature. Crash detection requires specific gyroscope and accelerometer hardware. The Series 5 predates this safety technology by three years. If crash detection matters for your safety, choose Series 8 instead.
Q: Can the Apple Watch Series 5 measure blood oxygen?
No, the Series 5 cannot measure blood oxygen levels. Apple introduced SpO2 monitoring with the Series 6 in 2020. The Series 5 lacks the necessary red and infrared LED sensors. Blood oxygen tracking remains exclusive to Series 6 and newer. This represents a significant health monitoring limitation for Series 5.
Q: How long will the Apple Watch Series 5 receive updates?
The Series 5 likely receives updates through 2025 or 2026 maximum. WatchOS 10 may be its final major software version. Apple typically supports watches for approximately five to six years. Released in 2019, the Series 5 approaches end-of-life. The Series 8 will receive updates several years longer.
Q: Does the Series 8 have better battery life than Series 5?
Both watches offer similar 18-hour standard battery life. However, the Series 8 includes Low Power Mode for 36 hours. The Series 5 lacks this extended battery mode entirely. Series 8 also charges significantly faster with fast charging support. Overall battery experience favors the Series 8 despite comparable ratings.
Q: Is the Series 8 display brighter than Series 5?
Yes, the Series 8 delivers double the brightness at 1000 nits. The Series 5 maxes out at only 500 nits brightness. This makes tremendous difference in outdoor visibility and sunlight. Reading notifications outdoors becomes much easier with Series 8. Many users cite brightness as the most noticeable upgrade.
Q: Can I still buy a new Apple Watch Series 5?
No, Apple discontinued the Series 5 in September 2020. You can only find refurbished or used Series 5 models. Third-party retailers occasionally stock remaining new inventory. However, limited software support makes Series 5 less attractive. Consider Series 8 or newer for warranty and longevity.
Q: Does the Series 8 work with Series 5 bands?
Yes, most Apple Watch bands are cross-compatible within size classes. The 40mm Series 5 bands fit 41mm Series 8. The 44mm Series 5 bands fit 45mm Series 8. Apple maintains band compatibility across generations deliberately. You can reuse existing bands when upgrading watches.
Alex Turner is a dedicated product researcher and reviewer at TopBuyGuide.com, known for his clear, honest, and data-driven insights. He spends countless hours testing, comparing, and analyzing products to help readers make confident and informed buying decisions.