The W10 earphones from Westone are in-ear earphones featuring Bluetooth and True-Fit technology, they have specially tuned, full range, single balanced armature drivers, these drivers aim to enhance sonic detail and frequency range. The True-Fit Technology is a result of Westone’s 60 years of experience designing products for the ear, the result being a universal-fit earpiece that is compact, low-profile, lightweight, and a comfortable fit.