PRODUCT DESCRIPTION PLANTRONICS 202581-01 BLACKWIRE C725 USB OPTIMISED HEADSET WITH ACTIVE NOISE CANCELLING -SILVER/BLACK USB headphones with great quality to supress distractions in noisy environments. A high quality product, meeting your particular requirements at the office or at home. TUNE INTO WORK, TUNE OUT NOISE The Blackwire 725 USB headset is great for keeping you focused in noisy office environments. Featuring Active Noise Cancelling technology, a noise-canceling mic, and hi-fi stereo performance, the Blackwire 725 minimizes external noises while ensuring that PC-based calls and multimedia come through crystal clear. With the Blackwire 725, distractions go down and productivity goes up. SMART SENSOR TECHNOLOGY Experience smart sensor technology that lets you answer a call by simply putting on the headset, making it the most productive and versatile corded headset on the market. KEEP DISTRACTIONS AT BAY Active Noise Canceling (ANC) technology reverses surrounding sound waves to cancel low frequency noise in order to isolate and minimize ambient noise, providing truly immersive audio that allows you to focus on what matters. Close out the noise, stay in the zone. SET CONTAINS: Plantronics Headset Soft Carrying Case User Documentation