Adhiper Audio cable for HD450bt cable,Compatible with Sennheiser Momentum 3, Momentum 2, HD 400S, HD1, HD 4.50 SE, HD 450BT, HD 4.40, HD 4.30G Cable, 2.5mm Replacement Cable.(1.45M/BLACK) : Amazon.co.uk: Electronics &
Sennheiser HD 450BT review - SoundGuys
Sennheiser HD 450 BT : Bluetooth wireless audio headphones