The Apple s6 watch has 2.5 watts of wireless charging. apple watch series 6 is different from the previous Apple Watch, it cancels the attached charger, supports wireless fast charging technology, and can complete fast charging in 1.5 hours.
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However, to enjoy the full charging speed of the Apple Watch, be sure to use a spare charger with a 10W power adapter to power the device. That's important because third-party wireless chargers on the market can only charge the Apple Watch up to 2.5W.