Apple Watch SE 3 vs Series 9 – Check Which One Is Best & Why?

Apple Watch Series 9 & Apple Watch SE 3 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 9 rather than the Apple Watch SE 3. 

Why Do I Recommend The Apple Watch Series 9

  • The Apple Watch Series 9 features the S9 SiP with a dedicated Neural Engine for faster responses and smoother app performance, whereas the Apple Watch SE 3 uses the S10 chip without an advanced Neural Engine.
  • Apple Watch Series 9 includes the Double Tap gesture system for hands-free control in situations like cooking or exercising, while the Apple Watch SE 3 lacks double Tap gesture system.
  • It has an Always-On Retina display for continuous visibility of information without raising the wrist, whereas the Apple Watch SE 3 has a standard Retina display.
  • The Apple Watch Series 9 supports 2,000 nits peak brightness for better outdoor readability in direct sunlight, while the Apple Watch SE 3 uses a lower-brightness display.
  • Apple Watch Series 9 includes an electrical heart sensor for generating ECG readings to track heart rhythm health, whereas the Apple Watch SE 3 has only an optical heart sensor.
  • It features a Blood Oxygen sensor for monitoring SpO₂ levels during workouts or sleep, while the Apple Watch SE 3 does not include a Blood Oxygen sensor.
  • The Apple Watch Series 9 supports stainless steel construction with sapphire crystal for improved durability and scratch resistance, whereas the Apple Watch SE 3 comes with an aluminum case and Ion-X glass.
  • Apple Watch Series 9 includes a second-generation Ultra Wideband chip for precise device finding and improved proximity functions, while the Apple Watch SE 3 which does not support the latest UWB hardware.

Maybe the Apple Watch SE 3 price can make you comfortable because it’s a little bit cheaper than the Apple Watch Series 9. 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 9Apple Watch SE 3
Neural Engine / Gestures4-core Neural Engine + Double Tap gestureDoes not include full Neural Engine gesture support
Ultra Wideband (UWB) chip2nd-generation UWBNo 2nd-generation UWB
Dust resistance ratingIP6X dust resistantNo IP6X certification
Case material optionsAluminium & Stainless SteelAluminium only
Glass type (premium variant)Sapphire crystalIon-X front glass
ECG sensorYesNo ECG sensor
Blood Oxygen sensorYesNo Blood Oxygen sensor
Max display brightnessUp to ~2,000 nitsUp to ~1,000 nits
Size options41 mm & 45 mm40 mm & 44 mm
Advanced health sensors (premium)Includes temperature, ECG, SpO₂Includes temperature sensor, but lacks ECG/SpO₂
Build finishStainless steel case optionNo stainless steel option
Material & finish varietyMore finish/material choices including premiumFewer finish/material options
Build connectivity extrasPremium connectivity featuresBasic connectivity feature set
PriceCheck Apple Watch 9 PriceCheck Apple SE 3 Price

What Common Both Can Do?

  • WatchOS Version: Both watches run on the same watchOS platform, ensuring they receive similar software features and updates. This keeps the interface consistent and allows users to enjoy the same core experience across both models.
  • Retina Display: Each model uses a Retina display, meaning text and icons appear sharp and easy to read. This contributes to comfortable daily use whether checking notifications or viewing fitness stats.
  • LTPO Display Technology: Both use LTPO display technology, which allows the refresh rate to adjust dynamically. This helps improve battery efficiency while maintaining smooth performance.
  • Aluminum Case Option: Both watches come in aluminum versions, giving users a lightweight and durable choice. Aluminum remains popular for its balance of strength, comfort, and affordability.
  • GPS: Both models include built-in GPS, allowing accurate tracking of outdoor activities without needing to carry an iPhone. This is especially useful for runners, cyclists, and walkers.
  • GPS + Cellular Option: Each model can be purchased with a cellular variant, enabling calls, messages, and data use without a paired iPhone nearby. This provides greater independence and convenience.
  • 50m Water Resistance: Both watches are water resistant to 50 meters, making them suitable for swimming and general water exposure. Users can comfortably take them into pools or showers.
  • Heart Rate Monitoring: Both include optical heart rate sensors that track heart rate throughout the day. This helps users monitor activity intensity, recovery, and general wellness.
  • Fall Detection: Each model features fall detection, which can automatically contact emergency services if a hard fall is detected. This adds an important layer of safety for users of all ages.
  • Crash Detection: Both devices support crash detection, using motion sensors to identify severe car accidents. This safety feature can initiate emergency calls when needed.
  • Emergency SOS: Emergency SOS is available on both models, allowing users to quickly call for help by holding the side button. It is a crucial feature in unexpected situations.
  • Temperature Sensing: Both have temperature sensing capabilities that support health and wellness features. This enables more accurate cycle tracking and overnight monitoring.
  • Cycle Tracking: Each model includes advanced cycle tracking, allowing users to log data and receive insights. Temperature readings further enhance menstrual health data accuracy.
  • Bluetooth: Both watches use Bluetooth for wireless connectivity to accessories and iPhones. This ensures smooth syncing, audio playback, and sensor communication.
  • Wi-Fi: Wi-Fi support is present on both models, enabling updates and connectivity when an iPhone is not nearby. This helps maintain functionality in more environments.
  • Fitness Tracking: Both watches are equipped with robust fitness tracking features for workouts such as running, cycling, strength training, and more. Daily activity rings remain consistent across both models.
  • Sleep Tracking: Sleep tracking is available on each model, helping users understand sleep duration and nighttime trends. This supports better overall wellness and recovery habits.
  • Fast Charging Support: Both support fast charging, reducing downtime and keeping the watch ready more quickly. This is convenient for users who charge during short breaks.
  • App Store Access: Each model supports downloading apps directly from the App Store, enabling customization and extended functionality. Users can tailor the experience to their needs with third-party apps.

Common Features

FeatureApple Watch Series 9Apple Watch SE 3
WatchOS VersionwatchOSwatchOS
Retina DisplayYesYes
LTPO Display TechnologyYesYes
Aluminum Case OptionYesYes
GPSYesYes
GPS + Cellular OptionYesYes
50m Water ResistanceYesYes
Heart Rate MonitoringYesYes
Fall DetectionYesYes
Crash DetectionYesYes
Emergency SOSYesYes
Temperature SensingYesYes
Cycle TrackingYesYes
BluetoothYesYes
Wi-FiYesYes
Fitness TrackingYesYes
Sleep TrackingYesYes
Fast Charging SupportYesYes
App Store AccessYesYes
Price Check Apple Watch 9 Price Check Apple SE 3 Price

FAQ

Is the Apple Watch Series 9 significantly faster than the Apple Watch SE 3?
Yes, the Apple Watch Series 9 is faster because it uses the S9 SiP with a dedicated Neural Engine, while the Apple Watch SE 3 uses the S10 chip without the same advanced processing capabilities, resulting in quicker responses and more advanced features on the Series 9.

Do both the Apple Watch Series 9 and Apple Watch SE 3 support the latest watchOS updates?
Yes, both models support the latest watchOS version, ensuring similar software features, updates, and long-term compatibility.

Is there a noticeable difference in display quality between the two watches?
Yes, the Apple Watch Series 9 has a brighter, higher-end LTPO Retina display with up to around 2,000 nits peak brightness, while the SE 3 offers a Retina LTPO display with lower peak brightness and slightly thicker bezels.

Do both models support cellular connectivity?
Yes, both the Series 9 and SE 3 offer GPS-only and GPS + Cellular versions, allowing users to make calls and use data without their iPhone nearby.

Does the Apple Watch SE 3 have an Always-On Display?
No, the Apple Watch SE 3 does not have an Always-On Display, while the Apple Watch Series 9 supports Always-On mode for continuous visibility of watch faces and information.

Is ECG available on both the Series 9 and SE 3?
No, ECG is available only on the Apple Watch Series 9, as the SE 3 does not include the electrical heart sensor required to perform ECG readings.

Do both watches include blood oxygen monitoring?
No, blood oxygen monitoring is supported on the Apple Watch Series 9 but not on the Apple Watch SE 3, which omits the SpO₂ sensor.

Are both watches suitable for swimming?
Yes, both models feature 50-meter water resistance, making them suitable for pool swimming, showering, and general water exposure.

Do both watches include safety features like Fall Detection and Crash Detection?
Yes, both the Series 9 and SE 3 include Fall Detection, Crash Detection, and Emergency SOS, providing similar safety capabilities.

Is the battery life similar between the two models?
Yes, both the Apple Watch Series 9 and SE 3 offer similar all-day battery life ratings under typical use, although the Series 9 may use more power when advanced features are active.

Does the Apple Watch SE 3 support the Double Tap gesture?
No, the Double Tap gesture is exclusive to the Apple Watch Series 9 due to its Neural Engine, and the SE 3 lacks the technical hardware needed for this feature.

Do both watches support temperature sensing for cycle tracking?
Yes, both the Series 9 and SE 3 support temperature sensing, which improves cycle tracking accuracy and enhances sleep data.

Are both watches compatible with the same Apple Watch bands?
Yes, both models use the same band connector system, making the vast majority of Apple Watch bands interchangeable across both models.

Is the Apple Watch Series 9 made with more premium materials?
Yes, the Series 9 offers both aluminum and stainless steel versions, while the Apple Watch SE 3 is available only in aluminum, making the Series 9 the more premium option.

Do both watches offer similar fitness and activity tracking features?
Yes, both devices support a full range of fitness tracking features including heart rate tracking, workout modes, activity rings, sleep tracking, and integration with Apple Fitness+.

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