This durable large remote speaker microphone is easy to operate even while wearing gloves and features IMPRES audio, which optimizes your audio when operating in noisy environments. The noise-canceling acoustics negate background noise so your voice come through loud and clear when you speak directly into the microphone. Also has a programmable orange emergency button and audio jack to attach earpieces for discreet communications. IP54, 3.5mm Audio Jack, Emergency Button Includes a Push-to-Talk switch, swivel clip, and quick disconnect latch. Designed with a large housing for users operating with gloves or in more rugged environments. A 3.5mm jack is located on the side of the microphone for receive-only accessories. The PMMN4069 is the same mic without the orange button. APX Remote Speaker Microphones have been designed to include the same speaker that is in the APX portable radio. These microphones deliver audio that is clearer, more intelligible and up to 50% louder than XTS series remote speaker microphones. The windporting feature dramatically lessens background noise from high winds and other severe weather conditions.