Product Name: Binaural Call Center Rj 9 Headset with Noise Cancelling Microphone Model NO.: VB-1002NC-RJ Jack Type: Rj9 Jack Diameter: 3.5mm Function: Multimedia, Noise-Cancelling, HiFi Usage: Home Theatre, Aviation, DJ, Portable Media Player, Computer, Mobile Phone Communication: Wired Color: Black Wire Material: PVC Model: Vb-1002nc-Rj Desc.: Binaural Call Center Rj 9 Headset with Noise Cance Packing: Gift Box or Bulk Quality: High Payment: Tt, Western Union or Paypal Customized Logo: Accepted Sample Leadtime: Around 1-2 Days Delivery Time: Around 15-25 Days Certificate of Origin: Shenzhen,China Available Color: Black Trademark: VBO Transport Package: PE Bag, Blister or Gift Box Specification: CE ROHS Origin: Shenzhen, China HS Code: 85183000 Product Description Binaural call center RJ 9 headset with noise cancelling microphone1) Driver unit: 30mm mylar speaker2) Frequency: 20-20KHz3) Impedance: 150 ohms / 2.2Kohms4) Sensitivity (at 1KHz): 105dB (+/-5dB)5) Resonance frequency (Fo): 300Hz6) Freqency response: Fo-6KHz7) Max input power: 10mW8) Mic sensitivity: -58dB or -40dB9) Plug: 2.5mm stereo (or RJ 9 Jack / USB plug)Our advantages:1) Provide tailor-made products to meet different customers' needs2) Strict quality control system. 100% inspection before delivery3) Compatitively price with fast delivery4) Customized logo or package is accepted5) Payment by T/T , L/C or Western Union is accepted6) Provide free sample for quality testing