Harman Kardon HKONYXSTUDIO3BLKAM  Onyx Studio 3 Wireless Speaker System with Rechargeable Battery and Built-in Microphone
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<div style="text-align:left"><b>[Product Information]</b></br><ul><li><span class="a-list-item"> 
							Bluetooth transmitter modulation
							
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							Bluetooth version 4.1
							
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							Battery charge time - 5hours
							
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							Woofer 2 x 75mm, Tweeter 2 x 20mm
							
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							Rated power: 4x15W(AC mode); 4x7.5W(Battery mode)
							
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