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
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
Wireless Presenter Remote Laser Pointer | Power Point Pointer Wireless Presenter - Remote Control - Aliexpress