Premium Bluetooth noise-cancelling cans combine comfort with extensive connectivity and a user-replaceable battery Sennheiser’s latest Momentum Bluetooth headphones build on the German audio specialist’s renowned sound quality with improved noise cancelling, exceptional comfort and a user-replaceable battery to keep pace with rivals. The Momentum 5s cost £330 (€400/$400/A$749) and directly replace their three-year-old predecessors, facing strong competition from Bose, Sony and Sonos.