The CC 550 is top-of-the-line headset and offers powerful, precise sound to both ears for optimal understanding. Its durable construction makes it perfect for any type of office or professional communication. Cable Length: 3.28 ft Cable Length: 3.28 ft Product Type: Headset Sound Mode: Stereo Product Type: Headset Manufacturer Part Number: 005361 Microphone Technology: Noise Cancelling Sound Mode: Stereo Connectivity Technology: Wired Form Factor: Ear-cup Connectivity Technology: Wired Form Factor: Ear-cup Manufacturer: Sennheiser Electronic Corporation Product Model: CC-550 Product Name: CC 550 Stereo Headset Brand Name: Sennheiser Brand Name: Sennheiser Earpiece Design: Over-the-head Earpiece Type: Binaural Minimum Frequency Response: 300 Hz Maximum Frequency Response: 3.40 kHz Microphone Design: Boom Earpiece Design: Over-the-head Earpiece Type: Binaural Minimum Frequency Response: 300 Hz Maximum Frequency Response: 3.40 kHz Microphone Design: Boom