Specification AgeRangeDescription : Adult AudioDriverType : dynamic_driver BatteriesIncluded : 1 BatteriesRequired : 1 BluetoothRange : 10 meters BluetoothVersion : 4 Brand : Sennheiser BulletPoint1 : The HD 820 delivers an unparalleled, reference-grade audiophile listening experience in a closed headphone BulletPoint2 : Innovative glass reflectors and frequency absorber systems replicate the wide open characteristics of audiophile speakers in a sealed earcup design BulletPoint3 : 56mm Ring Radiator transducers and Glass Reflectors provide total immersion in your music with absolute detail and a breathtaking soundstage BulletPoint4 : Made in Germany using the finest materials for sound integrity, build quality, and luxurious comfort BulletPoint5 : Connectivity technology: Wired Color : Black Compatibility : unknown CompatibleDevices : Laptops, Desktops, Tablets, Telephones, Smart Speaker, Televisions, Car Audio Systems, Cellphones ConnectivityTechnology : Wired ControlMethod : touch ControlType : Noise Control EarpieceShape : Over Ear ExternallyAssignedProductIdentifier1 : 649661676522 ExternallyAssignedProductIdentifier2 : 0649661676522 ExternallyAssignedProductIdentifier3 : 00021299189528 FasteningType : Clip Holder FormFactor : On ear FrequencyResponse : 43800 hertz HardwarePlatform : Tablet Hazmat1 : MANUAL GROUNDING Hazmat10 : DE_NoAir Hazmat11 : EG_NoAir Hazmat12 : ES_NoAir Hazmat13 : FR_NoAir Hazmat14 : GB_NoAir Hazmat15 : IN_NoAir Hazmat16 : IT_NoAir Hazmat17 : JP_NoAir Hazmat18 : MX_NoAir Hazmat19 : NL_NoAir Hazmat2 : UN9999 Hazmat20 : PL_NoAir Hazmat21 : SA_NoAir Hazmat22 : SE_NoAir Hazmat23 : SG_NoAir Hazmat24 : TR_NoAir Hazmat25 : US_NoAir Hazmat26 : ZA_NoAir Hazmat27 : 9 Hazmat3 : 3 Hazmat4 : AE_NoAir Hazmat5 : AU_NoAir Hazmat6 : BE_NoAir Hazmat7 : BR_NoAir Hazmat8 : CA_NoAir Hazmat9 : CN_NoAir HeadphonesEarPlacement : over_ear HeadphonesFormFactor : Over Ear HeadphonesJack : 6.35 mm Jack HeadphonesJack1 : 3.5 mm Jack HeadphonesJack2 : RCA Impedance : 32 ohm IncludedComponents : Headphones HD 820 (closed, dynamic headphones), connection cable: ¼” (6.35 mm) stereo jack plug (connected ex works), unbalanced, 4.4 mm stereo jack plug, balanced, USB flash drive (SD-U16L version) with instruction manual (as PDF file) and individually diffuse-field frequency response curve, instruction manual, storage box, microfiber cloth IncludesRechargableBattery : 1 IsAssemblyRequired : 1 ItemName : Sennheiser HD 820 Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers (Black) (Renewed) ItemPackageDimensions_Height : 152.4 millimeters ItemPackageDimensions_Length : 304.8 millimeters ItemPackageDimensions_Width : 254 millimeters ItemPackageQuantity : 1 ItemShape : Tall Headset Stand ItemTypeKeyword : over-the-ear-headphones Manufacturer : Sennheiser Material : glass MaximumOperatingDistance : 6.35 millimeters ModelName : HD 820 ModelNumber : 194613 MountingType : Tabletop NoiseControl : sound_isolation NumberOfBoxes : 1 NumberOfItems : 1 NumberOfLithiumIonCells : 2 PackageLevel : unit PartNumber : 507435-cr ProductDescription : This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee. ProductSiteLaunchDate : 2021-01-05T19:12:58.463Z RecommendedUsesForProduct : Gaming SafetyDataSheetUrl : https://media.graphassets.com/sC7T3YDDStSql9tK8upB Size : 1 SpecificUsesForProduct : Music StreetDate : 2020-12-01T00:00:01Z Style : Sturdy SupplierDeclaredDgHzRegulation : not_applicable TargetGender : unisex UnitCount : 1 WarrantyDescription : 90 days limited warranty WirelessCommunicationTechnology : Bluetooth