Product Name: Language Laboratory Headset 3.5mm Plug Headset Computer Headset Model NO.: SN120 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 Language lab headset SN120 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 for many years without man-made destroy. It is not problemunder hot humid climate. Replaceable earpad on the headset allows for on-site replacement to extend the product life time even further.Highlights: Good quality leather for earpad and headband. They cannot be used for many years 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 ±3dBImpedance: 32 Ω±10%Frequency range: 20-20KHzOutput Power: 20mwMicrophone sensibility:-56db±2dbDirectivity: OmnidirectionalEarpads: Soft,insulating,58mm opening.Cord Length: 2.4mConnector: 2X3.5mm plugWith volume control bar on cableWith gold plated plugWeight: 275gWarrantyTwo year limited warranty. Warranty will not apply if the product has been tampered with, disassembled or damaged by misuse, accident, modification or unauthorized repair.