Logitech Bluetooth Audio Receiver for Wireless Streaming
Logitech G733 Bluetooth alternative pairing : r/LogitechG
Amazon.com: Audio Bluetooth Receiver,HiFi Wireless Audio Adapter,Bluetooth 4.2 Receiver with 3D Surround AptX Low Latency for Home and Car Music Stereo Streaming (Pair 2 at Once) : Electronics
Logitech Unifying receiver - Wikipedia
User manual Logitech Bluetooth Audio Adapter (English - 143 pages)