Compare the Apple Watch: all differences

The Apple Watch Ultra 4 is the largest and sturdiest watch. On the large 49mm screen, you can see all details of your notifications and health information. The battery lasts twice as long as other Apple Watch models: 50 hours. Thanks to the new S11 processor, the Watch Ultra responds very fast. You can notice this when you open apps or view a workout, for example. Lastly, you get scratches less fast on the Watch Ultra 4, thanks to the shockproof titanium case and the scratch-resistant sapphire glass.

The Apple Watch Series 12 is less large and sturdy, but looks more stylish because of this. You can choose from the 46 or 42mm version. With 46mm, you have almost as much screen space as on the Watch Ultra 4, but the watch is more comfortable. The battery lasts about 24 hours, which is enough for an entire day. The Series 12 also has the fast S11 chip, so you can quickly check your notifications and use apps without slowdowns. Choose a light aluminum Watch Series 12, or a sturdy titanium or ceramic version.

The Apple Watch SE (2025) is the smallest model and has all basic functions. You can choose from a 44mm or even smaller 40mm display. This means you have less screen space than with the Series 12 or Ultra 4, but the watch stands out less. The battery lasts the least long of all Watch models: 18 hours. This means you have to charge daily. Due to the older chip, the SE 3 responds less fast and opening apps takes longer. The SE 3 is only available in aluminum, not in titanium.

With the robust Ultra 4 you can also do extreme sports like mountain climbing, trail running, and diving. The straps also reflect this. Choose the Ocean Band, for example. It's made for swimming and diving. You can see more data during your workout on the large screen. Thanks to the improved heart rate reading, you can keep track of your heart rate and HRV even more accurately. With the Watch Ultra 4, you can be reached anywhere and always send messages thanks to the satellite and cellular connections. This also works between tall buildings or in the mountains, so you never get lost.

In terms of sports and health functions, the Apple Watch Series 12 and Ultra 4 don't differ much. All readings of your sleep and health are extra accurate thanks to the temperature sensor and the improved heart rate sensor. You can read your heart rate and HRV even more precisely and make cardiograms. With the ECG app, you can measure your heart rate more precisely and record cardiograms. This allows you to quickly discover whether you have an irregular heart rate and if you may need to see a doctor. The temperature sensor also helps you track your cycle. This way, you know when you're ovulating or when your cycle is irregular.

With the Apple Watch SE 3, you can measure all basic data. You can see your daily steps, how long you sleep, and what your heart rate is. You don't receive extensive heart rate readings, as with the Series 12 and Ultra 4. That way, you're less likely to notice if you have an irregular heart rate. You also can't measure your oxygen level with the Watch SE 3. This can be useful during your workouts or sleep. Choose the Series 12 or Ultra 4 for the most accurate health measurements.