Smart watches work with an operating system, like a smartphone. Each of them offers its own ergonomics and application store. Smartwatches warn of incoming messages, vibrate in case of a call, display events in your calendar. They are also able to track your daily physical activity and give the weather. Many different models are available. Here are the elements to take into account to choose your connected watch.

What is a connected wath for?

Connected watches appeared several years ago, but they have never met a massive success. It must be said that they suffer from a reputation of useless gadget which is not totally unfounded.

However, technophiles will appreciate being alerted to their smartphone’s notifications (messages, social networks, calls, appointments). You can also check your emails, control your music, launch a podcast. And that’s not all: several models display train tickets and boarding passes, and even allow you to pay at merchants.

Smart watches also include a sports dimension: number of daily steps, indoor or outdoor running, swimming, and sometimes even skiing or yoga! However, the depth of performance analysis and coaching functions vary from model to model.


Watch Os

Watch OS is the operating system of the Apple Watch, designed to work in harmony with iOS (the iPhone system). The system includes all the applications of the Apple environment (Safari, Maps, Mail, Music, etc.) and integrates its voice assistant Siri.

Wear OS

Google offers Wear OS (previously called Android Wear), a version of Android designed for connected objects. It too offers the entire Google ecosystem (Maps, Playstore, etc.) and integrates its voice assistant Google Assistant. Google offers its system to various manufacturers, including Samsung, but also Huawei or Fossil.

Tizen OS

Until 2021, Samsung was running its watches under its own OS. Called Tizen OS, this system, which is compatible with Android applications, is still used on its older models. But since the Galaxy Watch 4 Series, Samsung has also integrated Google’s Wear OS. As a result, recent Samsung models (Galaxy Watch 4, Galaxy Watch 5) are no longer compatible with Apple’s iPhone.

Other OS

Other manufacturers of watches, such as Garmin or Polar, rely on their own system. The Apple Watch is only compatible with the iPhone, but the other connected watches on the market (except those from Samsung) work with both iPhone and Android smartphones. Note that some features are sometimes missing (responding to a text message or posting on social networks, for example).


The major smartphone manufacturers, such as Asus, LG, Motorola, Samsung or Sony had already launched a connected watch when Apple finally launched its own in April 2015. And this Apple Watch was the first to arouse public interest. With its neat finishes, color screen and original interface, Apple was able to seduce some of its consumers despite the price of its watch, €399 (and up to €1,200 depending on the materials!). Model after model, Apple has improved its watch (by enlarging the screen, making it waterproof, integrating a heart rate monitor, etc.) and has become the biggest seller of Smart watches ahead of Garmin and Samsung.

To this day, Casio is still the biggest manufacturers of digital timepieces and some of their creations have featured all sorts of things, including calculators and watches. Today, their G-Shock and their Baby-G watches are by far the most popular Casio wristwatches on the market along with many other cheap smart watches.