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100% brand new and high qualityMicrophone noise abatement， real sound body aircraft operatorFlexible goose neck boomScrew headphone cable， avoid the use of the process woundThe use of flexible metal hose， MIC positioning accuracy， structural design， durable， comfortable to wear330 degree adjustable boom to ensure the best call qualityHearing protection technology， care of the user's hearingAdjustable headband， acoustic shock protection circuitSuitable for call centers. Excellent sound quality， light weight and durableCompatible use for: phone sales， telephone counseling services， insurance， hospitals， banks， telecom operators， enterprises etc.Connector: 4-Pin RJ11Size: app.15.6cmx13cm/6.14''x5.11''Cable length: 2M (Max)Color: BlackPackage includes:1 x 4-Pin RJ11 Monaural Headphone