Confirm that the provided AC adaptor and charger cable are securely connected.
Make sure that you are using the provided AC adaptor and charger cable correctly. Using a non-specified USB connector to supply power, using an extension cable with the charger cable, and other improper use can result in unstable power supply and interfere with charging.
Check the charger terminals and charger cable connectors for dirt, dust, or other foreign matter. Clean the charger terminal and charger cable connectors by wiping them with a clean, dry cotton swab or cloth, and then reconnect the charger cable and try charging again.
Do not try to charge the watch in a location where it is extremely cold or hot. Doing so creates the risk of deterioration of the built-in battery, which will cause charging to stop automatically to protect it. Charging will resume automatically when temperature returns to the normal range.
Charging with in the following temperature range is recommended: 10℃ to 35℃.
