Linear aerea stereo audio adapter with two 3.5mm (M) mono plugs and a 3.5mm (F) stereo port Do not conform to those uncomfortable avion headphones when you could be using your personal headset. Convert left and right mono sounds to a normal stereo sound It allows you to use your own 3.5mm headphones on the Plug-N-Play plane without installing any software Minimo design for easy transport and transportation Universality for any headphone and headphones with 3.5 mm 2 3.5 mm male plugs of 3.5 mm single sound for avion headphones 1 3.5 mm female port for normal stereo headphones