Check the listing for details. Pro Intercom HeadSet Single Muff SMH210. Condition: New. Listed at 180.49 USD. Pro Intercom HeadSet Single Muff SMH210 Pro Intercom Head Set SMH 210 Super-Rugged Series Single Muff Communications Headset with Dynamic Mic SMH210 and DMH220 have exceptionally high-quality transducers providing wide smooth frequency response and reducing 'ear fatigue'. Comfortable ear cushions have excellent external noise exclusion. The flexible headband is adjustable. The noise-canceling microphone is mounted on a flexible, steel-reinforced boom, easily twisted into a preferred position. The normal transducer configuration for use with Pro Intercom and compatible headset intercom systems is 400W earspeakers and a 200W dynamic microphone. Electret microphones and lower impedance earspeakers are also available. SMH210 and DMH220 are fitted with a 4-pin female XLR plug. Different plugs may be installed at a reasonable cost. Low initial cost (compared to other professional communications headsets of equivalent quality), combines with long working life and low cost of repairs to offer outstanding value. 200-series headsets are compatible with Clear-Com and all other popular headset intercom systems. Performance: Exceptionally high-quality transducers provide a wide smooth frequency response, reducing the onset of 'ear fatigue' for those who must spend many hours wearing headsets. Deep, comfortable ear cushions have excellent external noise exclusion characteristics and are washable with ordinary dishwashing detergent. At 7.35 oz. the SMH210, and at 8.75oz the DMH220, (shown above) are much lighter than their appearances suggest. The noise-canceling microphone is mounted on a flexible, steel-reinforced boom which can be easily twisted into a comfortable position. The flexible headband is adjustable. The normal transducer configuration for use with Pro Intercom and compatible headset intercom systems are 400 speakers and a 200 dynamic microphone. Electret microphones and lower impedance speakers for other applications are also available, and combinations of these transducers make up the various models. For use with Pro Intercom and most headset communications systems the SMH210 and DMH220 are fitted with a 4-pin female XLR-type plug. For other applications many different plugs are available. Durability: Because these headsets have only one moving part, and the microphone boom is flexible rather than hinged, a remarkable degree of durability is achieved. The light-weight cable consists of a copper shield around steel reinforced conductors and is virtually unbreakable under normal circumstances. The assembly screws are hidden to prevent tampering. These headsets are easily field repairable. Pro Intercom maintains a full inventory of replacement parts at reasonable prices and provides a fast turnaround on repairs. Value: Low initial cost (compared to other professional communications headsets of equivalent quality), combines with long working life and low cost of repairs to offer outstanding value. Compatibility: 200 series headsets are compatible with Clear-Com and all other popular headset intercom systems, as well as drive-thru restaurant systems, disk jockey systems and other applications. Product Highlights: 400 Ohm Ear Speaker 200 Ohm Dynamic Microphone 4-Pin XLR Connection Comfortable Ear Cushions Adjustable Flexible Headband Noise-Canceling Microphone