A little more than one year ago, Oakley released O ROKR, a pair of stereo Bluetooth 1.2 headphones attached to a pair of Oakley sunglasses. Coupled with a Motorola Bluetooth-ready phone or an iPod equipped with a separately-sold Bluetooth transmitter, O ROKR let you wirelessly hear music or take phone calls. Now there's the Bluetooth 2.0-equipped O ROKR Pro ($249), which uses similar styling to the company's lighter, thinner plastic Thump Pro sunglasses,…