A high-quality product. Tracks your aerobic effort, oxygen consumption, step count, and heart rate. Tests how well you're sleeping. The information is structured and synced with a mobile device. The groundwork for basic exercises has been laid. Even with continuous use—during lengthy workouts, with Bluetooth enabled and indications continually monitored, and with the wearer's hands constantly squeezing the device—the battery will endure for three days. The battery is guaranteed to survive for 5-6 days under normal everyday use when the continuous heart rate monitoring feature is deactivated. I have no idea how long the battery lasts in watch mode, but in this mode it drains by about 2% per day. If you use it as a watch and enable Bluetooth synchronization only for training and do not receive notifications from your smartphone, then it can operate for a very long time. It's for the best. The only real drawback is the somewhat modest display.
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