The ListenTALK GO! System comes pre-programmed and ready to use. Excellent for any portable one-way communications requirement including tours, simultaneous interpretation, training, etc.Main Features: Ready to Use 1 Leader & 3 Participants All-Inclusive PackageWhat’s Included: One (1) LK-1 ListenTALK Transceiver Three (3) LKR-11 ListenTALK Receiver Pro Four (4) LA-401 Universal Ear Speaker Four (4) LA-445-BK Breakaway Lanyard One (1) LA-423 4-Port USB Charger One (1) LA-483 Soft Shell Case 4 One (1) LA-451 Headset 1