Amazon.com: Wireless 2 in 1 Bluetooth Receiver/Adapter, RX TX Audio Adapter,Wireless OneButton Control,Wireless Signal Adapter, Suitable for Speaker/Car/Computer/TV/Projector : Electronics
Amazon.com: Zotech Replacement USB Receiver (C-U0014) for LogitechWirelessPresenter R400/R700/R800 - Not Compatible with All R400/R700/R800 Models (See Details Before Buying) : Electronics