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Brand:1DORADO/ King Sailfish,Item Number:H-904J,Model Number:H-904J,Product Source Category:In Stock,Type:Please contact customer service for details,Wearing Method:Head-mounted,Headphone Output Audio Source:Please contact customer service for details,Plug Diameter:Please contact customer service for details,Plug Type:USB,Are these wireless headphones?:Wireless Earphones,Frequency Response Range:Please contact customer service for details,Sensitivity:Please contact customer service for details,Distortion Rate:Please contact customer service for details,Wire length:Please contact customer service for details,Speaker Diameter:Please contact customer service for details,Earplug/Earmuff Material:Please contact customer service for details,Headphone cable material:Please contact customer service for details,Processing Method:Please contact customer service for details,Does it support proxy franchise?:Support,After-sales service:Shop Three Guarantees,Color:904J Teaching Headphones - Black, 904J Teaching Headphones - Yellow, 904J Teaching Headphones - Blue, 904J Teaching Headphones - Green, 900BJ Host, 900C Host, 904J Teaching Headphones + 900BJ Host, 904J Teaching Headphones + 900C Host,Customizable:Not supported,Is it a patented source product?:No,Style:Minimalist Style,Headphone Category:Over-Ear Headphones