PPA-R37-10PK - Williams Sound PPA R37 Receiver (10 Pack)
10-pack of scanning receivers, with (optionally) earphones or headphones of your choice (EAR 013, EAR 008, EAR 022 or HED 021). Has a built-in belt-clip.
These receivers are shipped on Channel E 72.9MHz. You can easily change it if necessary by pressing the 'channel seek' button inside the battery compartment. It will automatically find the channel you are transmitting on!