The Motorola IMPRES Remote Speaker Microphone (PMMN4108) combines rugged durability with exceptional audio performance. Featuring an IP67 rating, it is completely dust-tight and can withstand immersion in water for up to 30 minutes. Its IMPRES™ technology suppresses ambient noise, amplifies quiet transmissions, and enhances voice clarity, making it ideal for demanding environments. Windporting technology eliminates wind noise and prevents water clogging, ensuring clear communication in challenging weather. With an omni-directional acoustic design and large housing, this RSM is built for reliability in the harshest conditions.