Bose QuietComfort Ultra Earbuds

The QC Ultra Earbuds sit at the top of Bose's consumer lineup, competing directly with the Sony WF-1000XM5 and Apple AirPods Pro 2 in the $280–$300 true wireless bracket — a tier where ANC performance and tuning maturity matter more than raw driver spec. The 9.3mm custom dynamic driver is on the smaller end for flagship earbuds, but driver diameter alone tells you little here; Bose's acoustic engineering has historically extracted more usable low-end extension from compact housings than the raw measurements suggest. IPX4 is adequate for workouts and rain but not submersion, which puts it on par with the XM5 and a step behind the AirPods Pro 2's IP54 rating. …More info