Headphones capable of giving an optimum mounting feeling to the head of everybody by merely being mounted and without special adjustment, and also capable of being mounted for many hours without giving stress to the user. Some examples provide that the tungsten layer may be deposited by sequentially exposing the substrate to the tungsten precursor and a reducing gas during an atomic layer deposition process. Responsive to receiving a second serialized byte stream containing a result produced by the remote object and determining the presence of a second remote object, in the second byte stream, for which no reference can be found, using information contained in second serialized byte stream to determine the class type of the second remote object.