BOSE A30 Headset (straight cable, dual plug, bluetooth capable) is the brand name or equal. Salient features must include: Fixed-wing aircraft requirement for 20x aviation headsets (straight cable, dual plug, bluetooth capable). Equipment will be comfortable and lightweight. Headsets will come with a fabric head pad and crisp clear audio. Headset requirement will be noise canceling and reduce outside audible distractions. Headset will come with a fully flexible mouthpiece. 5 year warranty required. ANR and clarity is required. Weight will be less than 18 oz. Must meet FAA TSO and EASA E/TSO-C139acertification standards. Must have ability to move microphone to either side of headset. Must transmit audio, must have minimal clamping to the aviator head. Noise Cancelling, Echo Reduction, Adjustable Noise Cancelling Bluetooth Wireless Capability swappable boom mic Full active noise reduction operating range: 112-118 dB SPL Reduced active noise reduction operating range: 132-138 dB SPL Operating range: 8.0 - 16VDC Headphone Sensitivity: 96.5 +/- 3.5 dBA SPLU174 plug, 150-ohm mic with straight cable Must be compatible for headset and A/C