Kit includes: 1 NNT20 Intercom, 1 Pair NO303 Over-the-Head (Stereo) Headsets, 2 HCF4 (Front) 4Æ (EU: 10,16 cm) coil cables connecting the headsets to the HEC10 extension cables and 2 HEC10 (Front) 10Æ (EU: 25,4 cm) extension cables connecting the intercom to the HCF4 coil cables to headsets Intercom High fidelity stereo sound for smart phone or other music source VOX (Voice Activation) Separate front inputs for music and smartphones Two front and two rear headphone inputs RF shield housing Compatible with car-to-car radio or handheld radio Over-the-Head Headset Large noise cancelling comfortable ear seats Soft pillow type over-the-head cushion Easy to use and reach volume knob and Push to Talk (PTT) Button Poly-coated voice activated boom mic. INTERCOM WHEADSETS BEIGE 2 SEAT