Yes, Ear (open) supports fast charging. With a 10-minute charge, the earbuds can be used continuously for up to 2 hours with earbuds only (5.5 hours earbuds and case).
Note: the battery life was tested at the Nothing laboratories at a temperature of 25℃, with the earbuds and charging case fully charged, AAC music playback at 50% volume and other features at default settings. The actual result may differ based on device settings, environment, usage and other factors.