To charge your watch, bring the cable connector close to the rear pins. The built-in magnets will ensure a proper connection. Finally, plug the USB end into a charging port.
In one hour your device can be fully charged for up to 8 days of use, depending on usage.
BATTERY LIFE
Battery life values greatly depend on watch settings, activity performed, smartphone model, and other external factors.
In typical use, battery life is 8 days. Typical use: heart rate measurement every 10 min, screen brightness at 50%, and 2 h of sports monitoring per week.
In intensive use, battery life is 5 days. Intensive use: heart rate every 5 min, brightness at 75%, and 4 h of sports per week.
In power saving mode, battery life is 13 days. Power saving: same as typical use but with minimum brightness, no vibration, and no quick view.