Yes, but it is not recommended to often use a high-power charger to charge the headset, which is easy to impact the battery of the Bluetooth headset and damage the battery of the headset. Headphones should be charged with a special charger, otherwise it is easy to break the battery of the Bluetooth headset.
Generally supported, although there is a fast charge protocol, the speed can reach 120w
But the headset has its own power management chip, will not really output 120w, will adjust it to the appropriate power charging.
Yes, the headphone will charge faster