ANR HEADSETGeneral AircraftPH-IOOAC-BT ANR Headset with Bluetooth (Special Order Only) 270 Degree Rotatable Dynamic or Electret Microphone Control Module FEATURES ♦ Active Noise Reduction Ratings(NRR):29dB. ♦ Passive Noise Reduction Ratings(NRR):23dB. ♦ Plastic ear shell with Bluetooth enabled for music and phone calls. ♦ Auxiliary 3.5mm audio input(cable included). ♦ 3-Way audio priority switch: A)lntercom priority, B)All audio sources.C)Intercom only. ♦ 3-Color power/Battery status LED. ♦ 4-Function bluetooth status LED. ♦ Uses 2 AA batteries.(Battery not include) ♦ Premium speakers and microphone for crystal clear audio. & *»» Active Noise Bluetooth Straight Cord Dual Plug Fixed Wing MP3 Player Reduction Interface