xMEMS has launched the Sycamore-W, which it claims is the "world’s thinnest speaker designed specifically for wrist-worn wearables." The Sycamore-W is only 1 mm thin and weighs only 150 mg, making it approximately 70 percent smaller than the speakers typically used for smart watches. xMEMS took the micro-electromechanical systems (MEMS) technology used in cell phones' microphones [...]