Rugged Radios H80-DOUBLE-TALK-X2 Linkable Intercom Headset Kit for 2 People - Great for NASCAR Races and In-Car Communications - Features 3.5mm Input Jack for Scanners/Music Players Push to Talk On Eardome Volume Control On Headset Race Scanner / iPod / Music Port Includes Two Headsets, Two Headset Cables & Two 3.5mm Audio Cables Communication In High Noise Environments Between Two People without a Radio