Which is better for an iPhone owner?

The Apple Watch SE 3. The Galaxy Watch8 runs Wear OS and pairs with Android, so it will not work as a companion to an iPhone.

Which has the bigger screen?

The Galaxy Watch8, at 1.5 inches. The SE 3 in this listing is the 40mm case size.

Is the Galaxy Watch8 worth the extra over the SE 3?

It is actually cheaper right now: $197.99 at Walmart versus $209.00 at eBay as of November 8, 2026. The catch is the Walmart unit is listed as restored "Like New" and it only works with Android.

Which lasts longer on a charge?

The SE 3 is rated at 18 hours, and 15 minutes of charging gives up to 8 hours. Samsung does not state an hour figure for the Watch8 in these specs.

Does either watch have ECG?

Neither listing includes an ECG sensor. The SE 3 covers heart rate, temperature and sleep apnea alerts; the Watch8 covers heart rate, sleep, stress and activity.

Can I swim with them?

Yes. Both are rated 5 ATM, and the Watch8 adds IP68 dust and water protection.

Apple Watch SE 3 (GPS, 40mm) vs Samsung Galaxy Watch8

Buy the Galaxy Watch8 if you use an Android phone: it is $197.99 at Walmart as of November 8, 2026, against $209.00 at eBay for the Apple Watch SE 3, and it adds a larger 1.5-inch screen, sapphire crystal, MIL-STD-810H shock rating and LTE. Buy the Apple Watch SE 3 if you own an iPhone: it is the only one of the two that pairs with iOS, and its price has swung from $149.99 to $249.00 in under two weeks, so a little patience can save real money. Both are aluminum-case watches with always-on displays and 18-hour-class batteries.

Today the Samsung Galaxy Watch8 costs $0.55 less at its best price.

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