Compatible with ^^ Dual-Microphone System External ambient mics Maintain 360 situational awareness Active noise-canceling boom mic Crystal-clear communication even at 110dB+ environments (FAA-compliant for ramp operations) ^^ Certified Hearing Protection NRR 26dB (25dB when used with ANSI-certified hard hats) Compliance Ready Meets OSHA 29 CFR 1910.95 & ICAO Annex 16 standards ^^ Ruggedized Design Recessed mic array with IP54 rating (dust/water-resistant) Wind noise suppression (>15mph gust handling) ^^
Package include: 1 headset + 1 U94 ptt Please notice, no battery included, if you work in high noise environment (noise above 82db) and want to use the noise reduction function, please firstly put 2pcs AAA batteries. Then it will work as an ANR headphone; If not use in very high noise environment, then no need to put batteries, it will work as a PNR headphone.