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also called a “smart watch” or in English smartwatch is an electronic watch that integrates sophisticated communication functions: receiving and sending phone calls, notifications from a mobile phone, sending and receiving messages, voice recognition. These instruments are most of the time equipped with a touch screen which allows you to personalize the display by changing the dial; in general, they act as a companion for the smartphones with which they are associated by Bluetooth connection. Sport and connected watchIn addition to receiving notifications, this connected watch can also be used to control the mobile music player and run applications. Real miniaturized computers, they integrate movement sensors (accelerometer, gyroscope), proximity sensors and for some a GPS or an optical heart rate reader. Some smartwatches are autonomous thanks to a cellular connection which allows them to offer telephony functions.