Headphone makers have tried two approaches to creating wireless headphones: try to hide all of the battery and electronic components inside oversized earphones, or create a special compartment for the electronics so that the earpieces can be smaller and more comfortable. Audio-Technica has taken the latter route with ATH-BT03 ($80), a new pair of wireless earphones with an in-line remote control, a microphone for telephone calling, and six hours of…
