[Walmart] Sony PS3 Bluetooth Headset 2.0 $5
WM Markville has ample supply of the Sony PS3 Bluetooth Headset 2.0 at the bottom of the PS3 display case for $5, urban camo edition for $10. Should work with all Bluetooth-compatible devices that support mic and mono audio including phones. Comes with mini-USB charging cradle. YMMV at other locations.
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Amazon info (Black)
Amazon info (Urban Camo)
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Amazon info (Black)
Amazon info (Urban Camo)