Experience crystal clear audio with the lightweight Plantronics HW540's convertible wearing style. This wired headset is built sturdily enough to handle everyday use while the technology itself incorporates some of the latest features for headphones. Included with an earpiece, headband and neckband  wearing style to switch between, you'll be able to choose a tailored fit. The quick disconnect cable allows you to add various accessories to connect with a desk phone, mobile phone, computer or cordless phone (sold separate). Once the correct cord is added to go with your Plantronics HW540, from there it's plug and play. Office work is more pleasant with the Plantronics HW540's noise cancelling microphone so users and customers on the other end can carry on a pleasant conversation without excess background noise. The headset also has an adjustable headband and bendable microphone so it can suit exactly the position it needs to in order to be worn comfortably. Finally, you’re covered with a one-year advanced replacement warranty for peace of mind. That means one year of our support: if our team determines that your Plantronics HW540 is defective, we’ll ship a replacement that same day and cover the shipment cost to do so. Technical Specs Connects to - PC or desk phone with Poly audio processors or cables Ideal for - Telephone-intensive users, including formal customer care centers, and customer service organizations Audio Performance - Wideband audio (up to 6,800 Hz), noise canceling microphone Hearting Protection - SoundGuard technology, acoustic limiting for protection against sounds above 118 dBA MPN - 88828-01 UPC - 017229142947 Downloads Plantronics EncorePro HW540 Datasheet