Large Active Noise Cancelling Remote Speaker Microphone (IMPRES) with Nexus plug

Active Noise Cancelling Technology PTT: Front and Side PTT Belt Clip : Rotating with Metal Ring Audio Jack: 3.5mm and Nexus Secondary Audio Accessories: PMLN7188 Voice Tube, RMN4052B Heavy Duty Headset, GMMN4585 HC-1 Single Speaker Headset and GMMN4584 HC-2 Dual Speaker Headset Emergency Button: Yes Volume Control: Yes (Hi/Lo) Programmable Button: Yes Acoustic: Wind porting Intelligent Audio: Yes IP Rating: IP67 Intrinsic Safety Standard: No Requires Radio Firmware version Mototrbo R2.7 or higher Radio compatibility: Mototrbo DP4000e and Astro APX serie