Product Name: Language Lab Headset 2*3.5mm Model NO.: Sn130 Jack Type: Plug-in Jack Diameter: 3.5mm Function: Multimedia, Microphone Usage: Computer Communication: Wired Type: Electret Earphone Color: Black Wire Material: PVC Trademark: MITECHNIC Transport Package: 40 Units in One Carton Specification: 63X41X39CM Origin: China HS Code: 85183000 Product Description Headset SN130 has been greatly used in language labs and computer labs all over word. It is famous for its good quality and good sound. It uses high quality skin for headband and earpad, which can be used under hot humid climate. Replaceable earpad on the headset allows for on-site replacement to extend the product lifetime even further. Highlights:Good quality leather for earpad and headband. They cannot be used for long time without man-made destroying. Excellent volume control bar controller, which can be easily adjusted the volume on the cable. Gold plated connector, which can make sure the better connection with the computer. Adjustable boom allows the microphone to be accurately positioned for outstanding speech reproduction.SpecificationLoudspeaker diameter: 50mmEarphone sensibility: 112 dB ±3dB Impedance: 32 Ω±10%Frequency range: 20-20KHzOutput Power: 20mvEarpads: Soft, insulating,58mm opening.Microphone sensibility:-56db±2dbDirectivity: OmnidirectionalCord Length: 2.4 metersConnector: 2X3.5mm plugWith volume control bar on cableWith gold plated plugWeight: 275gUsing PlacingLanguage Learning SystemsMultimedia Learning SystemsComputer TrainingConferenceLanguage Training OrganizationsWarrantyTwo years limited warranty. Warranty will not apply if the product has been tampered with, disassembled or damaged by misuse, accident, modification or unauthorized repair.