Product Name: Language Lab Headset with 2*3.5mm Plug 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 Language lab 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 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.