VXi 201818 Passport 10P DC Over-the-Head Monaural Headset with DC N/C Microphone Superior noise canceling eliminates background noise (up to 89 percent) and improves communication. Hearing protection suppresses sudden and unexpected sound spikes. Lightweight design is easy and comfortable to wear all day. High quality durability stands up to all-day, every-day use. Requires P-type QD lower cord (available separately) to connect to your phone.