Which is better for sleep tracking?

Both track sleep and give a sleep score. The Series 11 lasts up to 24 hours, so it is easier to wear overnight and still get through the next day. The SE 3's 18 hours usually means a top-up charge.

Is the Series 11 worth $70 more than the SE 3?

If you want hypertension alerts, a bigger screen and about six more hours of battery, yes. If you mainly want notifications, workouts and sleep tracking, the SE 3 covers those for less.

Does the SE 3 have an ECG?

No. The SE 3 has no ECG and no blood-oxygen sensor. The Series 11 adds hypertension notifications, which the SE 3 lacks.

Which has the longer battery life?

The Series 11, at up to 24 hours versus 18 hours on the SE 3. That is about a third longer per charge.

Which fits a smaller wrist?

The SE 3 comes in a 40mm case. The Series 11 comes in 42mm and 46mm, so the 46mm will look large on a small wrist. Try the 42mm if you want the Series 11.

Can I make calls without my phone?

Only with a cellular model and a service plan. This SE 3 listing is GPS only. Some Series 11 models support cellular, so check the listing before buying.

Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M vs Apple Watch Series 11

Buy the SE 3 if you want the lowest price and a smaller 40mm watch. Buy the Series 11 if you want longer battery life, a bigger screen and hypertension alerts. As of November 3, 2026, the SE 3 is $249.00 new at Walmart and the Series 11 is $319.99 new at PayMore Palm Beach Gardens. The Series 11 has sold as low as $250.00 since October 29, 2026, so watch its price history before paying full price.

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