Plantronics S12 telephone headset system offers hands-free convenience and comfort. Includes a 2-in-1 convertible headset for over-the-head stability or over-the-ear convenience, a noise-canceling microphone for superior sound clarity and the Firefly in-use indicator light that lets others know you are on the phone. Plantronics S12 Telephone Headset System - Wired Connectivity - Mono - Over-the-ear, Over-the-head, Behind-the-neck General Information Manufacturer: HP Inc.Manufacturer Part Number: S12Manufacturer Website Address: http://www.hp.comBrand Name: PlantronicsProduct Model: S12Product Name: S12 Telephone Headset SystemMarketing Information: Plantronics S12 telephone headset system offers hands-free convenience and comfort. Includes a 2-in-1 convertible headset for over-the-head stability or over-the-ear convenience, a noise-canceling microphone for superior sound clarity and the Firefly in-use indicator light that lets others know you are on the phone. Product Type: Headset Technical Information Connectivity Technology: WiredSound Mode: MonoImpedance: 200 OhmMinimum Frequency Response: 200 HzMaximum Frequency Response: 4 kHz Earpiece Earpiece Design: Over-the-ear Over-the-head Behind-the-neck Earpiece Type: Monaural Microphone Microphone Technology: Noise CancellingMicrophone Design: Boom Controls/Indicators Earpiece Controls: VolumeMicrophone Controls: Mute Physical Characteristics Weight (Approximate): 1.45 oz (41 g) Miscellaneous Country of Origin: Mexico Product Numbers: 017229116726