Apple
Apple Watch SE 3
- Case Size 40mm
- Battery Life 18 hours
- Compatibility iPhone
- Health Sensors Temperature sensing, Vitals app
Reliable sleep and health tracking in a full smartwatch, with a daily charging routine.
The Apple Watch SE 3 is a smartwatch first, and that's why it belongs here. If your phone is an iPhone, the watch pairs into the same ecosystem and gives you sleep, activity, heart-rate, and temperature data without adding a separate screen just for sleep.
Sleep tracking is a real strength in our testing: the morning view is easy to read, and the watch's temperature sensing and Vitals app add a layer that a simple band doesn't. We also like that the 40mm case stays out of the way at night, which matters more than a big display when you're trying to sleep.
It's not the pick if you want a set-and-forget sleep device. The 40mm case is comfortable overnight, but the watch asks for more attention than a ring or a screenless band. That's a fair trade if you want one device for sleep, workouts, notifications, and safety features; if sleep is the only job, the Oura Ring 5 is easier to live with.
Bottom Line
The Apple Watch SE 3 is the best sleep tracker here for iPhone users who want a full smartwatch, with reliable sleep and activity data.
What We Like
- Reliable sleep and activity tracking
- Temperature and Vitals context
- Full smartwatch features
- 40mm case comfortable overnight
Worth Noting
- 18-hour battery means daily charging