Apple Watch 6 vs. Apple Watch SE: Every big difference
Apple’s newest smartwatch, the Apple Watch Series 7, made its debut at the tech giant’s California Streaming event in September, and it’s now available for purchase. (Here’s how to trade in your old Apple Watch to get the best deal.) But, before committing to the Apple Watch 7, you may want to consider last year’s models.
Apple launched two new smartwatches last year: the Apple Watch Series 6 and the Apple Watch SE. Both devices ran on WatchOS 7 and are now compatible with WatchOS 8. The Watch SE is a more affordable version of Apple’s flagship Watch. It has fewer features and an older processor, Apple’s S5 chip. The devices have cellular and Wi-Fi-only variants. Apple no longer sells the Watch Series 6 on its website, but it launched at $399 (£379, AU$599). It can now be found at , and other retailers for $350. The Watch SE costs $279 (£269, AU$429), and is still available through Apple’s site.
If you’re interested in either smartwatch but aren’t sure which one you should get, read on for our deep dive on how these two compare.
Read more: Apple Watch 7 vs. Apple Watch 6: All the major changes
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Apple Watch SE and Apple Watch Series 6 comparison
Design: Similar looks, but Series 6 has more design options
Both the Watch Series 6 and the SE have the same display and resolution, so you’ll get the same viewing experience. They’re also water resistant so you can swim with them, and they work with Apple’s Solo and Braided loop bands.
The Watch Series 6, however, has more design and color choices. In addition to the standard silver, grey and gold aluminum colors, the Series 6 comes in blue and red. It also has steel and titanium variants, with different color options in both materials. Hermès, the luxury fashion company and longtime partner of Apple Watch also has new bands of its own for the Series 6.
Lastly, the Series 6 has an always-on display. Originally introduced in the Watch Series 5, it means that the display is constantly on and you don’t need to raise your wrist or tap the screen to look at the time or check for notifications.
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Hardware: Watch Series 6’s blood oxygen sensor
The Watch Series 6 has the latest S6 chipset from Apple while the Series SE has the S5 system. While the Watch SE’s setup isn’t as advanced as the Series 6, Apple said the SE is twice as fast as 2017’s Series 3.
One major update that’s only on the Watch Series 6 are sensors that measure your blood oxygen levels. Known as an oximeter, this feature can gather important information about your breathing and blood circulation in 15 seconds, and lend key insight about your overall respiratory and cardiac health. It’s particularly important for those affected by COVID-19, since blood oxygen levels are indicative of how severely the disease is affecting your body.
Read more: Apple Watch SE: Um, what exactly is the point of this $279 smartwatch?
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The accompanying Blood Oxygen app will take measurements in the background, like during sleep, but you can manually activate a reading too. Data is viewable through the built-in Health app, where you can see your levels and track trends over time.
Both watches also have an optical heart sensor to measure heart rate. But the Watch Series 6 also has an app for its electrical heart sensor (abbreviated as ECG or EKG), which debuted on the Watch Series 4, to detect irregular heart rhythms.
Lastly, Watch Series 6 has an Ultra Wideband, or U1 chip. Available in iPhones starting with the iPhone 11 line, this chip is for “spatial awareness,” and it helps devices find other devices more precisely when they’re in close proximity. When it debuted, Apple said this chip would improve AirDrop, a service that lets iPhone users quickly share files with nearby iPhones. Tantalizingly, Apple added that “that’s just the beginning” of its uses. Many believe that the U1 chip actually laid the groundwork for the Apple AirTags.
Read more: Apple Watch SE vs Series 6 vs. Series 3: How to choose?
Software features: Both are compatible with WatchOS 8
Both the Apple Watch Series 6 and Watch SE are compatible with WatchOS 8. Apple’s new operating system comes with new workout features, a redesigned Mindfulness app, Wallet app upgrades and more.
The two watches previously ran on WatchOS 7 and introduced Family Setup. The feature allows you to pair an iPhone to someone else’s Apple Watch, be it a family member like a young child or an elderly adult. You can then apply controls, like limiting contacts and app downloads, or automatic location tracking. The other person won’t have to have an iPhone of their own. WatchOS 7 also came with a number of new watch faces as well, including ones for Memoji stickers.
These updates are included on top of several standard Apple Watch features like fall detection, noise-level monitoring, emergency SOS contact and an altimeter to measure elevation levels.
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Apple Watch Series 6 vs. Series SE specs
Apple Watch Series 6
Apple Watch Series SE
Display size, resolution
40mm, 44mm Retina OLED 368×448 pixels
40mm, 44mm Retina OLED 368×448 pixels
Always-on
Yes
No
Dimensions (millimeters)
40mm: 40mm (height), 34mm (width), 10.4mm (depth); 44mm: 44mm (height) 38mm (width) 10.4mm (depth)
40mm: 40mm (height), 34mm (width), 10.4mm (depth); 44mm: 44mm (height) 38mm (width) 10.4mm (depth)
Weight (grams)
40mm Wi-Fi: 30.5g, Wi-Fi + Cellular: 30.5g; 44mm Wi-Fi: 36.5g Wi-Fi + Cellular: 36.5g
40mm Wi-Fi: 30.49g, Wi-Fi + Cellular: 30.68g; 44mm Wi-Fi: 36.2g Wi-Fi + Cellular: 36.36g
Materials/ finishes
Aluminum, steel and titanium
Aluminum
Colors
Silver, gray, gold, blue and red (aluminum); silver, graphite and gold (steel); titanium and black (titanium)
Silver, gray and gold
Interchangeable bands
Yes
Yes
GPS
Built-in
Built-in
Automatic workout detection
Yes
Yes
Compass
Yes
Yes
Altimeter
Yes
Yes
Water resistance
Yes, up to 50m
Yes, up to 50m
Calls
Yes
Yes
Notifications
Text replies
Text replies
Microphone
Yes
Yes
Speaker
Yes
Yes
Voice assistant
Siri
Siri
Music
Onboard, playback and streaming (with Cellular model)
Onboard, playback and streaming (with Cellular model)
Mobile Payments
Apple Pay
Apple Pay
Sleep tracking
Yes
Yes
Period tracking
Yes
Yes
Special features
Blood Oxygen app, ECG app, U1 chip, emergency SOS, fall detection, hearing health alerts
Emergency SOS, fall detection, hearing health alerts
Emergency features
Emergency SOS, International emergency calling, fall detection
Emergency SOS calling (911 and emergency contacts)
Compatibility
iOS/iPhone only
iOS/iPhone only
Software
WatchOS 7
WatchOS 7
Processor
S6 chip dual-core processor and W3 wireless chip
S5 chip dual-core processor and W3 wireless chip
Connectivity
Wi-Fi and Cellular option ($100 more)
Wi-Fi and Cellular option ($50 more)
Storage
32GB
32GB
Bluetooth
5.0
5.0
Power
Magnetic Apple charging cable and USB connector (backward compatible)
Magnetic Apple charging cable and USB connector (backward compatible)
Battery life
All day (18 hrs.)
All day (18 hrs.)
Price (USD)
Starting at $399 (40mm aluminum)
Starting at $279 (40mm aluminum)
Price (GBP)
£379
£269
Price (AUD)
AU$599
AU$429
Vanessa Hand Orellana/CNET
Starting at $399, the Apple Watch Series 6 has the most advanced features Apple offers on a smartwatch, with an even brighter screen than the Apple Watch SE that’s easy to see even when it’s on standby. The Series 6 is the only Watch with an always-on display and it has a built-in ECG app on your wrist. (These features were first introduced on the Apple Watch Series 5 in 2019, which Apple has since stopped selling.) The Series 6 is also the first, and only Apple Watch to monitor blood oxygen levels both on demand, or automatically as you go about your day (and while you sleep).
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Vanessa Hand Orellana/CNET
If you’ve never owned an Apple Watch, this is the one to get. The Apple Watch SE is a cheaper alternative to the Series 7 with a lot of the same great features plus a slightly longer battery life. Aside from the extra health sensors (ECG and SpO2), the most notable difference between the two is that the SE doesn’t have an always-on display watch face. But you probably won’t miss it if you’ve never had this smartwatch feature. Read our Apple Watch SE review.
Read our Apple Watch SE review.
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