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HQRP Kit: Battery and Charger Compatible with Harman Kardon Onyx, Onyx Studio Portable, Studio-2, Studio-3, Studio-4 Speaker ESX2567Q AU38AA-00 AU38AA-OO LI11B001F Wireless Speaker System AC Adapter
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Battery for Harman/Kardon Onyx Studio 1, Onyx Studio 2 ,Onyx Studio 4 LI11B001F | eBay