A 'pack-in' headset offered with some Nokia phones, including the N900. The unit offers a single call answer button, a non-cancelling mic, and a sound-isolated design with silicone sleeves, of which three sets are supplied for adjusting fit. Sonically the WH-205 is similar to some sets provided with various 'Walkman' Sony Ericsson phones and in-earphones such as Sennheiser's original CX 300, but offer higher isolation when fitted correctly due to the extended design of the silicone sleeves.