General Aircraft Carbon Fiber ANR HEADSET PH-400AC-BT Ultra-lightweight headset with bluetooth Control Module FEATURES ♦ Weights only 9oz .(nearly half of other aviation headsets) ♦ Active Noise Reduction Ratings(NRR):29dB. ♦ Passive Noise Reduction Ratings(NRR):23dB. ♦ Bluetooth enabled for music and phone calls. ♦ Auxiliary 3.5mm audio input .(cable included) ♦ 3-Way Audio Priority Switch: A) Intercom Priority, B) All Audio Sources, C) Intercom Only. ♦ 3-Color Power/Battery Status LED. ♦ 4-Function Bluetooth Status LED. ♦ Uses 2 AA batteries.(batteries not included) ♦ Made of real carbon fiber. ♦ Ultra comfortable faux leather cushions. ♦ Premium speakers and microphone for crystal clear audio.