Brand new headphone company Aerial7 combining high quality headphones with modern user demands! The Matador is a light weight stylish multi-device stereo headphone engineered to deliver the highest-quality listening experience from your mixing desk, mp3 player, cell phone or other music device. Great to combine one headphone for your dj work, isteing and also cell phone use with the additional cable with build in mirophone! The integrated Swivel ear cup is designed for single-sided monitoring and beat matching. Slim profile in-line microphone for use with iPhone and other cell phones. Thin cable to decrease bulk, weight and downward pull on headphone. TECHNICAL: Includes standard and iPhone-compatible 3.5mm and adapters for use with multiple devices. Driver Diameter: 44mm, Impedance: 32Ω, Frequency Response: 5~20KHz, Sensitivity (S.P.L.): 1083dB (at 1KHz), Input Plug Diameter: 3.5mm iPhone, 3.5mm~6.3mm (1/4'') adapter & 3.5mm iPhone~Skype adapter.