Check the listing for details. Telex 450D Handheld Paging Microphone. Condition: New. Listed at 127.54 USD. The 450D is a low-impedance, balanced-line dynamic microphone that provides smooth, peak-free response and trouble-free performance. The rugged design makes it particularly effective for use in busy environments (e.g. manufacturing and restaurants) where excellent voice response characteristics in a microphone are required. This dynamic hand microphone with push-to-talk switch for paging features a molded Cycolac housing in pebble-grain black finish and an unterminated black neoprene coil cord relieved at the housing by spring-type strain relief.FeaturesOmnidirectional polar patternRugged ConstructionLow ImpedanceTwo-position momentary slide switchTailored response for voice intelligibilityRugged ABS constructionUnterminated, 4-conductor, 2 shielded, black neoprene, coiled cordSpecificationsMic Application Type: HandheldElement Type: DynamicPolar Pattern: OmnidirectionalFrequency Response: 100 Hz - 8,000 HzImpedance: 200 ΩSensitivity: 1.26 mV/PA (-58 dBV/PA)Power Requirement: None / PassiveConnector Type: UnterminatedZones: Single-zone