Everything suits me. Different pros: Design (for my taste better than oval from a competitor). Large selection of design styles (set from the application in the phone). Many workout options (outdoor running, bike track running, outdoor walking (with the ability to track the route in the application on the phone), indoor walking, stationary bike, ellipse, rowing machine, swimming in the pool, free workout). I myself use training on an exercise bike (you can set a goal: kcal or duration). Measures the level of oxygen in the blood (I do not use). Convenient clasp. No need to take it out of the bracelet to charge. Has some cons Bluetooth v.4.2 - outdated version (can "lose" the phone at a distance of about 5 m). Because of this, the battery "plants" faster than a competitor. A charge (without constant monitoring of heart rate and sleep quality) is enough for 1.5-2 weeks.
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