Compatible models: Harman/Kardon Onyx Studio 7 Portable Stereo Bluetooth Speaker (HKOS7BLKAM; HKOS7BLUAM; HKOS7GRYAM), Harmon Kardon Aura Studio 3 2 1 Aura Plus Air Play speakers. Compatible models: Harman/Kardon Onyx Studio 4 Wireless Bluetooth Speaker (HKOS4BLKAM; HKOS4BLUAM; HKOS4WHTAM; HKOS4BLKBSG; HKOS4BLKEU; HKOS4WHTBSG; HKOS4BLUBSG) Onyx Studio 3 Wireless Speaker System (ONYXSTUDIO3R; HKONYXSTUDIO3BLKUS; ONYXSTUDIO3REDG1; ONYXSTUDIO3K; ONYXSTUDIO3BLUEG1; HKONYXSTUDIO3BLKAM) Onyx Studio 2 Wireless Speaker System (ONYXSTUDIO2BLKUS).
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