The Nothing Ear (a) Guide names it for travel, music and calls.Travel: Four noise cancelling modes up to 45 dB quiet the trip, and the case stretches playback to 42.5 hours. Source linkedSourceMusic: Meaty, arresting sound over LDAC Hi-Res Audio, with a custom EQ and bass enhance in the Nothing X app. Source linkedSourceCalls: Three microphones per bud and Clear Voice Technology cut background noise from your calls. Source linkedSource
The Bose QuietComfort Ultra Earbuds (2nd Gen) Guide does not name what it is best for yet, so this list does not compare the two.