Active Noise Cancellation and Clear Sound Technology help you focus on what matters by reducing ambient noise and delivering crisp audio. 1440 hours persistent standby means the device stays ready for long periods without frequent charging. Builtin HD microphone enables clear voice pickup for calls and recordings. Key features Active Noise Cancellation for reduced background noise Clear Sound Technology for natural, detailed audio Builtin HD microphone for clear voice pickup 1440 hours persistent standby for extended readiness Use scenarios Office or remote work: join calls and video conferences in noisy environments with clearer voice and less distraction Travel and commuting: enjoy clearer music and conversations while on the move in trains, planes, or crowded spaces Home or occasional use: a reliable accessory that remains ready over long standby periods