The charger that comes with the watch 4. It says it takes five volts one amp so it should be any standard USB charger. But in reality it does not seem to work on many USB chargers? What's the requirement?
The charger must supply 5V (volts) and at least 1A (amp) to meet the watch’s requirements.
Chargers with higher amperage (e.g., 5V 2A or 3A) are generally safe, as the watch will only draw the current it needs (up to 1A), provided the voltage remains 5V.
This is because the watch has built-in circuitry to regulate the current drawn, preventing damage from overcurrent.
