How to choose the right smart watch

Case size

A watch’s fit, comfort, and wearability are primarily determined by case size, and a few millimeters can make a significant difference. Those with small wrists should look for watches in the 38-42mm range, while those who prefer chunky, oversized watches or have large wrists should consider options above 45mm.

iOS vs Android

It’s essential to consider the smartphone you use. The Apple Watch is iOS-only, while Wear OS watches, such as the Samsung Galaxy Watch and the Google Pixel Watch lineups, are exclusive to Android.

Older Wear watches are compatible with both, but the iOS experience is diminished, and it’s not recommended. Huawei, Fitbit, and Garmin smartwatches are compatible with both, but some advanced calling features from the wrist are usually exclusive to Android.

For more information, check out our guides to the best smartwatches for iPhone and the top Android watches.

Apps and extra features

Buying into Apple Watch and Wear OS watches means you can access bustling app stores full of options from big-name brands, such as Spotify or Strava, and expand on the core features.

For example, platforms run by Garmin, Amazfit, and Huawei lack developer support for many high-quality apps. This means you’re limited to basic functionality.

Health and fitness features

Smartwatches are increasingly becoming health and fitness tools, so make sure yours has the sensors you want.

Nowadays, you’ll be hard-pressed to find a smartwatch without a heart rate sensor, and most are adept at 24/7 HR and resting heart rate.

However, brands like Apple, Google Fitbit, and Samsung now include ECG, a powerful health tool. If you’re curious, read our ECG explainer.

Runners will want an accurate GPS on board to track outdoor workouts.

Battery life

The Apple Watch and Wear OS smartwatches generally only last a day or two away from the charger, which is one of the biggest turn-offs for people.

There have been moves to extend that to 2-3 days, with the Apple Watch Ultra 3, Google Pixel Watch 4, and OnePlus Watch 3.

Luckily, other smartwatches now last more than a week, with Fitbit, Huawei, Amazfit, and Garmin all pushing longer runtimes.

Cellular connectivity

A key consideration is whether you want your smartwatch to function independently of your phone.

Many manufacturers, such as Apple and Samsung, offer LTE versions, which require a separate data plan for purchase. Most carriers and networks have plans for LTE smartwatches.