Tactical Headphone Hearing protection: Effectively reduce ambient noise. The left and right pickup microphones help complement the ambient sound without completely isolating outside sounds. High quality helmet: Super high cut helmet for more comprehensive protection and upgraded irregular Paste panel allow to attached more helmet accessories, vents holes and a more streamlined geometry design to enhance airflow, breathable, comfort, fit, and water drainage. Lightweight: multi-impact resistant, ventilated inner lining with repositionable impact pads and holes for ventilation. The helmet is a lightweight, fully adjustable helmet that is perfect for almost all outdoor applications. The lightweight design means you will be less tired when wearing a helmet on your head. Name: Tactical Helmet Set Package Contents: Please see the second picture. If you are interested in tactics, please visit my store. Notice: MIN is a non-noise-canceling headphone (No battery required, need to be used with PTT), and MAX is a sound-pickup noise-canceling headphone. (Please see the second picture for accessories).