Features: The wireless speaker chargers provides strong protect. Good anti-interference performance and high reliability. High working efficiency. Low operating temperature and long service life. 100-240V input ranges, meeting global usage standards. Good insulation performance and high dielectric strength.With short circuit, over load, overvoltage protect functions. Specifications: Material:ABS Color:Black Input:100-240V; Option Type:Speaker Power Adapter with US-Plug;Speaker Power Adapter with EU-Plug;Speaker Power Adapter with UK-Plug; Suitable for Harman Onyx Studio7 :HKOS7BLKAM;Onyx Studio 6;HKOS6BLKAM;HKOSBLUAM;HKOS6;HKOS6GKYAM;HKONYXS2BLKJK;Onyx Studio 5:HKOS5BLKAM;HKOS5BLUAM;HKOS5GRYAM;Onyx Studio 4:HKOS4BLKAM;HKOS4BLUAM;HKOS4WHTAM; HKOS4BLKBSG; HKOS4BLKEU;HKOS4WHTBSG; HKOS4BLUBSG;Onyx Studio 3:ONYXSTUDIO3R;HKONYXSTUDIO3BLKUS;ONYXSTUDIO3REDG1;ONYXSTUDIO3K;ONYXSTUDIO3BLUEG1; HKONYXSTUDIO3BLKAM;Onyx Studio 2:ONYXSTUDIO2BLKUS;Onyx Studio 1:HKONYXSTUDIOG1;HKONYXSTUDIOJN; Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xPower Adapter