An Over-the-Head headset from Sennheiser, the SD Pro1 covers just one ear with a silky-soft leatherette ear cushion. In addition to the comfort you'd expect from Sennheiser, the SD Pro1 also features the talk time, range and warranty of all of their other top-of-the-line wireless headsets. Plus, if you're looking to connect to your PC or Mac, the SD Pro1 is a great choice.