The RS120 is an open, wireless RF headphone system. Its transparent & well-balanced sound with great bass response makes this system an ideal choice for all types of music & TV applications. Laid-Back Convenience Its innovative 'easy recharge' function offers the ultimate in convenience when it comes to charging & storing your wireless headphones. Enjoy total freedom of sound, stylish design & maximum comfort over a 100 metre range. Built On Decades Of Pedigree Dr Fritz Sennheiser formed his company over 50 years ago, & this family-owned business has expanded into an international organisation that is recognised as one of the world's leading manufacturers of electro-acoustic solutions Professional users of Sennheiser products include theatres, broadcasters, airlines, the MOD, tourist attractions & heritage sites, the hard-of-hearing & recording studios.