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Amazon.com: Yealink BT40 BundleX4 Bluetooth USB Dongle for Yealink SIP-T46G,-T48G,-T29G : Office Products
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Amazon.com: Yealink BT41 Bluetooth Adapter USB Dongle Accessory for Headphones/Headsets - for Yealink IP Phones T27G, T29G, T46G, T48G, T41S, T42S, T46S, T48S, T53, GTW Microfiber : Electronics
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