SC 230 USB is a competitively priced single-sided headset for connecting to a softphone via USB. Perfect for users that require superb HD voice clarity and supreme comfort.Features- USB connectivity – easy handling and convenience for connecting to a softphone- Best-in-class comfort – CircleFlex® patent-pending dual-hinge ear cup system that adapts seamlessly to your ears, for instant perfect fit and relaxed all-day wearing- Noise-canceling microphone – filters out ambient noise for optimum speech clarity- Unique robust construction – crafted with look and feel in mind- Single-sided wearing style – numbered headband grooves for step-by-step adjustment for instant perfect fit- Durability – metal reinforced headband designed for years of wearing pleasure- Sennheiser HD Voice Clarity –wideband sound for a natural listening experience- Bendable boom arm – ensures microphone position is always optimal. Cannot be twisted out of position- Pivotable boom – rotates through 350 degrees for wearing flexibility on right or left ear and precision microphone placement- Name tag personalization – easy user ID helps to avoid wearing a neighbor's headset- ActiveGard™ –technology protects you from acoustic shock and sudden sound surges- Peace of mind – 2-year international warranty