The impact on the watch is different, the Apple Watch charger original charging current is constant voltage constant current, will not cause harm to the watch. The Apple Watch charger is not original, which may cause the battery to overcharge and overvoltage, and the battery is easy to age.
The quality is different, the original Apple Watch charger is a qualified product, and it is not easy to have quality problems. Apple Watch charger is not original some quality is not good, the charger is not durable.
Warranty service is different, Apple Watch charger original problems will be warranty, Apple Watch charger non-original charging watch problems, do not do warranty service.