A couple of months later, he began to show signs of dying. When the battery runs out, it restarts endlessly. Loses connection with the device at a distance, which causes problems, because it does not allow you to turn on the workout. Actually, why does the device not work on its own? Asks to turn on the application, but even after turning it on, it still swears that there is no device. After half a year from the purchase, the side button stopped working. For a while it did not react at all, now it works every other time. The pulse during training does not show correctly. You need to include a separate workout so that the tracking is “constantly reliable”. After exercising in the pool, the display began to light up or swim. Question to the manufacturer: “why do you add a pool training function to your tracker, but do not make your device waterproof.” The information about the device says that you can not wet the device, but how then to swim?