Bose QuietComfort Earbud II - Replacement Left Side Only - Black Driver Size_4 in Improved ergonomic design means that

Improved ergonomic design means that when you’re deep diving into your music

Model Number: EF-ZN960CLEGUS

Authentic Incipio brand products

- Standard Package: Individually boxed with installation instructions

7GHz Quad-core Processor

Bose QuietComfort Earbud II - Replacement Left Side Only - Black Driver Size_4 in Improved ergonomic design means thatBose QuietComfort Earbud II Replacement Left Side Only. Triple Black version. Features: CustomTune sound calibration personalizes noise cancellation and sound performance to fit your ears. Proprietary active noise cancelling technology delivers deep, immersive sound with powerful bass. Compact, lightweight design makes them comfortable to wear for long periods. Touch controls allow easy music control and noise cancellation adjustments. Crystal clear