New iPhone Headphone adapter from Belkin
Belkin will soon be releasing a headphone adapter for the iPhone.
The iPhone Headphone Adapter will allow you to connect any headset to your iPhone. Simply attach one end of the Adapter into the recessed audio jack of your iPhone, and the other into your existing headset.
At the moment there is no RRP but it would probably be between the £10-£15 mark as is the Griffin iPhone Headphone Adapter.
