Telephone Headset Wired Unilateral Headphone for Office Business Customer ServiceBlack

Feature: 1. Equipped with a unidirectional microphone to reduce background noise and make the sound clearer. 2. Uses a 30MM speaker, has a powerful sound, and has a built in high fidelity sound card chip to make the sound clearer. 3. Adopts brass shielded wire to resist electromagnetic interference and reduce signal transmission loss. 4. Has extensive compatibility, and supports for Windows2000, for Windows XP, for Windows Vista, for Windows7, for Windows8, for OS X, for Chrome OS, etc. 5. Plug and play, only need to connect to the interface in the computer, simple to operate, no driver required. Specification: Item Type: Telephone Headset Material: ABS, Brass Microphone Size: Ф6.0 x 5.0mm Directionality: Unidirectional Sensitivity: 47+ 3dB Impedance: less than 2.2K Ohm Straw Length: Approx. 23cm 9.1in Speaker Diameter: Ø30mm Impedance: 32 Ohm Frequency Response: 20Hz 20kHz Output Sound Pressure (S.P.L): 96dB+ 3dB Plug Type: USB, Ø3.5mm Plug . Package List: 1 x Telephone Headset1 x USB Adapter Cable 1 x User Manual