logitech USB Powered Bluetooth Audio Receiver User Guide
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Logitech Wireless Bluetooth Audio Receiver, Bluetooth Adapter for PC/Mac/Smartphone/Tablet/AV Receiver, 3.5mm Audio and RCA Outputs to Speakers, One-Push Pairing Button, UK Plug - Black/Blue : Amazon.co.uk: Electronics & Photo
Logitech Bluetooth Audio Adapter
Logitech Bluetooth Audio Receiver for Wireless Streaming