With a full charge and typical use, the Ear (1) battery provides 4 hours of playback with ANC on (or 5.7 hours with ANC off). Top up the battery by placing Ear (1) in the case for up to 10 minutes and you'll enjoy another 1.2 hours.
With a full charge and typical use, the case provides 24 hours of battery with ANC on (or 34 hours with ANC off). Charging the case for just 10 minutes provides Ear (1) with another 8 hours of battery life.