A wire-free listening experience for any device instantly gives it portability and appeal

A Bluetooth headset priced at little more than a tenner raises immediate questions about its all-round quality

There are a million iPod speaker sets and accessories but relatively few for enabling you to listen to music stored on a smartphone through a decent set of speakers

A hands-free kit is a must-have accessory for anyone wishing to use their smartphone while on the road

Maintaining the balance between small size and superior sound quality is the biggest challenge for manufacturers of Bluetooth headsets