The 30mm diameter (about 1.2 inches) drivers can deliver a 95dB signal-to-noise ratio, though Sigmo-apo does not list the benefits of the interchangeable earpads, with a traditional rectangle shape or the diamond shape. Controls on the right headphone include power, play, pause, stop, and track up or down as well as volume adjustment buttons. Battery life is rated at 11 hours when listening to music or making phone calls, while maximum range is rated at about 33 feet. A version with a docking iPhone/iPod adapter is also being offered.
