Motorola PMMN4024 Remote Speaker Microphone with 3.5 mm audio jack, IP54 Rated.  Intrinsically Safe - IS (FM Approved).

The Windporting feature helps lessen background noise from high winds, severe weather and other outdoor noises. Audio jack to attach earpieces for discreet communications.

Compatible with XPR 6300, XPR 6350, XPR 6380, XPR 6500, XPR 6550, XPR 6580, XPR 7350, XPR 7550, XPR 7580.

The Windporting feature is specifically designed for windy outdoor environments and dramatically reduces the noise caused by howling winds and harsh weather.