Garmin has introduced the fourth generation of advanced vivosmart fitres bracelets. The novelty received a Garmin Elevate heart rate measurement sensor, a barometric altimeter, an accelerometer and an illumination sensor. In addition, Pulse Ox is provided for measuring blood oxygen saturation. Garmin vivosmart 4 is equipped with a small OLED-display with a resolution of 128 × 48 pixels and is made in a thinner and lighter body than the third generation of the bracelet. Offline for up to seven days, protection against water and dust, as well as resistance to vibration and falls from a great height. In addition to the usual features for a fitness tracker, the novelty features the Body Battery function, which, based on your activity, heart rate and stress level, will tell you the best time to train and sleep. The company said that nothing like this on the market did not exist until today.