Google:
BOSE Airline adapter for QC3 QC25 QC35 Quiet Comfort - Brand New Genuine Bose
or Airplane Adapter for Headphone, 3.5mm Airline Flight Converter for Bose QuietComfort 15 25 35 3 2 QC15 QC25 QC35 QC3 QC2 SoundLink AE2 Headphones
Thank you. I assume this will work with a B&W 3.5 mm jack?
Just curious - what are the other two pins for? Do they charge the phones? The B&Ws seem to last forever, I charged them when I bought them, and I haven't charged them since.