This is a completely unused SENNHEISER (Sennheiser) XSW-D Portable Base Set equivalent that I had in reserve. It's a small transmitter and receiver that can transmit audio wirelessly. I originally purchased it as part of a separate set, and since I didn't use this one, I'm putting it up for sale. ・Included Items - XSW-D 3.5mm Transmitter - XSW-D 3.5mm Receiver - 3.5mm Curly Cable - Hot Shoe Mount - Belt Clip - USB-A to USB-C Charging Cable - Color Stickers for Labeling - Instruction Manual, etc. ・Features (Quoted from the official HP) Easy to use with one touch 2.4 GHz digital transmission allows operation worldwide 75m transmitter/receiver range (under optimal conditions) 5-hour battery life Switching between multiple transmitters linked to one receiver is possible Mute can be activated from either the transmitter or receiver Mute from transmitter or receiver --- All items in the photos are included. Please read my profile before purchasing. Thank you for your consideration.