Product Name: Cheapest Language Lab Headset with Good Quality 3.5mm Plug Model NO.: SN110 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: 50 Units in One Carton Specification: 63X41X39CM Origin: China HS Code: 85183000 Product Description Language lab headset SN110 has been greatly used in language labs and computer labs all over word. It is famous for its good quality and good sound. 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.Earphone:1. Impedance: 2*32Ω2. Sensitivity: 110±3dB3. Frequency range: 20~20.000Hz4. Rated power: 2×100mWMicrophone1. Impedance: 1800Ω2. Sensitivity: -48±3dB3. Frequency response: 30~16.000Hz4. Directivity: Omnidirectional5. Connector: 2X3.5mm plugHighlights: 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. Adjustable boom allows the microphone to be accurately positioned for outstanding speech reproduction.WarrantyTwo year limited warranty. Warranty will not apply if the product has been tampered with, disassembled or damaged by misuse, accident, modification or unauthorized repair.