Impact M1-SRSM-MD1 Compact Speaker Mic with 3.5mm Jack, Motorola 2-Pin Adapter this means the dB Buster

this means the dB Buster earplugs bounce part of the dangerous incoming noise back out of your ear

High-grade brass transducer (speaker) for enhanced audio quality

Impact PDM-2 Over-the-Head Dual Speaker Headset with Boom Microphone

Impact S1W-EH1-MP Silver Series 1-Wire Surveillance Kit with Micro In-Line Push-To-Talk (PTT) and Ear Hanger with Ear Bud

Impact M1-SRSM-MD1 Compact Speaker Mic with 3.5mm Jack, Motorola 2-Pin Adapter this means the dB BusterImpact SRSM MD1 standard duty speaker microphone with 3. 5mm earpiece jack. Crystal clear audio with Strong TPU coil cable. Shock, drop, dust and vibration tested. Splash proof. Small form ergonomic shoulder microphone head. 360 degree clothing clip. oiled mic cable. 3. 5mm audio accessory jack. Superior audio, crystal clear voice quality. Compact, low profile microphone head for discrete applications. 1 Year Manufacturer Warranty.