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Apple Watch Series 4 vs Series 6 – Check Which One Is Best & Why?

Apple Watch Series 6 & Apple Watch Series 4 share many similarities, but there are also important differences, such as quality, performance, features, design, and connectivity. If you want the best one between them, I Would recommend the Apple Watch Series 6 rather than the Apple Watch Series 4.

Why Do I Recommend The Apple Watch Series 6?

  • The Apple Watch Series 6 features the S6 SiP processor for faster app loading and smoother overall performance, whereas the Apple Watch Series 4 uses the older S4 chip.
  • Apple Watch Series 6 has an Always-On Retina Display for quick time and metric visibility without wrist movement, while the Apple Watch Series 4 uses a standard display.
  • It includes a Blood Oxygen Sensor to monitor SpO2 levels for better wellness insights during sleep and workouts, whereas the Apple Watch Series 4 has no blood oxygen measurement capability.
  • The Apple Watch Series 6 supports dual-band Wi-Fi (2.4GHz and 5GHz) for stronger and faster wireless connectivity in crowded networks, while the Apple Watch Series 4 supports only 2.4GHz Wi-Fi.
  • Apple Watch Series 6 has 32GB internal storage to keep more music, apps, and podcasts accessible offline, whereas the Apple Watch Series 4 comes with 16GB storage.
  • It comes with an Always-On altimeter to display real-time elevation during activities like hiking and climbing, while the Apple Watch Series 4 includes a traditional altimeter that does not continuously update elevation.
  • The Apple Watch Series 6 supports faster charging to reduce downtime and allow more time being worn for fitness and sleep tracking, whereas the Apple Watch Series 4 uses slower charging.
  • Apple Watch Series 6 includes the U1 Ultra-Wideband chip for improved device location precision and better future-proofing for ecosystem features, while the Apple Watch Series 4 has no U1 chip.

Maybe the Apple Watch Series 4 can make you comfortable because it’s a little bit cheaper than the Apple Watch Series 6. But you have to compromise all the above-mentioned features. Now the Decision is Yours. I hope it was helpful to choose the right one.

Side-by-Side Comparison

FeatureApple Watch Series 6Apple Watch Series 4
ProcessorS6 SiPS4 SiP
U1 ChipYesNo
Always-On DisplayYesNo
Display Brightness (AOD Mode)Up to 500 nitsNot supported
Blood Oxygen SensorYesNo
ECG VersionUpdatedOriginal
Storage32GB16GB
Wi-Fi2.4GHz + 5GHz2.4GHz only
AltimeterAlways-OnStandard
ChargingFasterStandard
Case ColorsMoreFewer options
Max Screen BrightnessHigherLower
Speaker VolumeLouderStandard
Noise MonitoringYesNo
Background ECG MonitoringImprovedBasic
Battery EfficiencyHigherLower
Solo Loop SupportFullPartial
Finish OptionsAluminum/Steel/TitaniumAluminum/Steel only
Rear Case MaterialCeramic/SapphireComposite
Setup for Family ModeSupportedLimited support
PriceCheck Apple Watch 6 PriceCheck Apple Watch 4 Price

What Common Both Can Do?

  • Retina Display: Both watches include high-resolution Retina displays that provide crisp visuals, making text and graphics easier to read in daily use.
  • Electrical Heart Sensors (ECG): Each model supports ECG monitoring to help detect irregular heart rhythms, enabling users to track heart health directly from their wrist.
  • Optical Heart Rate Sensors: Both watches track continuous heart rate data, which supports calorie estimation, exercise tracking, and health notifications.
  • Digital Crown with Haptic Feedback: Both watches use a tactile crown that allows precise scrolling and navigation, making interaction smoother without blocking the screen with touch gestures.
  • Fall Detection: Each watch can automatically detect hard falls and trigger alerts or emergency services, enhancing safety during everyday activities.
  • Emergency SOS: Both models allow users to quickly contact emergency services from the wrist, providing fast access to help in critical situations.
  • GPS + Cellular Options: Each generation includes GPS-only and GPS+Cellular configurations, allowing independent calling and navigation when away from the iPhone in the cellular model.
  • Swimproof 50m Water Resistance: Both watches are rated for swimming and can be used for pool workouts, improving durability for active lifestyles.
  • Compass: Both models include a built-in compass for better orientation and more accurate outdoor mapping during navigation-based activities.
  • Microphone and Speaker: Each watch supports voice interactions, phone calls, and Siri responses directly on the watch without needing headphones.
  • Apple Pay Support: Both allow secure contactless payments from the wrist, making transactions faster and more convenient than using a phone or wallet.
  • LTPO OLED Technology: Both screens dynamically adjust refresh rates to save battery life while maintaining smooth visuals.
  • Wi-Fi Connectivity: Each model connects to wireless networks for updates and faster data transfer without requiring an iPhone to be constantly nearby.
  • Bluetooth Connectivity: Both support Bluetooth for accessories such as wireless earbuds and syncing with the iPhone.
  • Activity & Fitness Tracking: Each model tracks steps, calories, workouts, and health metrics, helping users maintain fitness goals.
  • WatchOS Compatibility: Both models run modern versions of watchOS, ensuring updated apps, safety features, and performance improvements.
  • Gyroscope and Accelerometer: Both include advanced motion sensing used in workout tracking, fall detection, and gesture features.
  • Sleep Tracking Support: Each model supports sleep tracking through watchOS updates, allowing users to monitor sleep patterns and improve nightly rest.
  • GPS + GLONASS: Both leverage global satellite systems to offer accurate location tracking during outdoor workouts.

Common Features

FeatureApple Watch Series 6Apple Watch Series 4
Retina DisplayYesYes
Electrical Heart Sensors (ECG)YesYes
Optical Heart Rate SensorsYesYes
Digital Crown with Haptic FeedbackYesYes
Fall DetectionYesYes
Emergency SOSYesYes
GPS + Cellular OptionsYesYes
Swimproof 50m Water ResistanceYesYes
CompassYesYes
Microphone and SpeakerYesYes
Apple Pay SupportYesYes
LTPO OLED TechnologyYesYes
Wi-Fi ConnectivityYesYes
Bluetooth ConnectivityYesYes
Activity & Fitness TrackingYesYes
WatchOS CompatibilityYesYes
Gyroscope and AccelerometerYesYes
Sleep Tracking SupportYesYes
GPS + GLONASSYesYes
Price Check Apple Watch 6 Price
Check Apple Watch 4 Price

FAQ

Does the Apple Watch Series 6 have better performance than the Apple Watch Series 4?
Yes, Apple Watch Series 6 uses the S6 SiP which delivers faster and more efficient performance compared to the S4 chip in Apple Watch Series 4, improving app responsiveness and overall smoothness.

Can both Apple Watch Series 6 and Series 4 track heart health?
Yes, both models include an optical heart rate sensor and ECG capability, allowing users to detect irregular heart rhythms and monitor heart rate throughout the day.

Do both watches work with the latest versions of watchOS?
Apple Watch Series 6 supports the latest watchOS versions fully, while Series 4 also supports modern watchOS updates but may lose support earlier due to its older hardware.

Is the Always-On display available on both models?
No, the Always-On Retina Display is only available on Apple Watch Series 6, while Series 4 requires users to raise or tap the wrist to view the screen.

Do both watches support blood oxygen measurement?
No, blood oxygen monitoring is exclusive to Apple Watch Series 6 and is not available on Series 4.

Is storage different between the Series 6 and Series 4?
Yes, Apple Watch Series 6 provides 32GB of internal storage, while Apple Watch Series 4 has 16GB, affecting how much music, apps, and data can be saved offline.

Can both models detect falls and provide emergency assistance?
Yes, both watches include fall detection and Emergency SOS features, helping users connect to emergency services during accidents.

Do both models support Apple Pay?
Yes, both watches include NFC support, allowing secure contactless payments directly from the wrist without needing a wallet or phone.

Are both watches able to track sleep?
Yes, both Apple Watch Series 6 and Series 4 support sleep tracking through watchOS, although Series 6 may provide slightly better battery efficiency overnight.

Is GPS included in both models?
Yes, both watches include built-in GPS for accurate location tracking during outdoor workouts and navigation without needing an iPhone nearby.

Can both watches be used for swimming?
Yes, both are swimproof with 50-meter water resistance, making them suitable for swim workouts and general water exposure.

Do both watches have cellular variants?
Yes, each generation is available in GPS-only and GPS+Cellular options, allowing users to make calls and use data without the iPhone when using the cellular version.

Is microphone and speaker functionality included in both models?
Yes, both include a built-in microphone and speaker for phone calls, Siri interactions, and voice messaging.

Are the band sizes compatible between the two models?
Yes, most bands that fit Apple Watch Series 4 will also fit Apple Watch Series 6 since they share the same case size options and attachment design.

Do both models support fitness and activity tracking features?
Yes, both provide comprehensive activity metrics, including calories, step count, workout modes, and health notifications, supporting users in maintaining active lifestyles.