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Interface: RJ11 crystal head. Microphone: Single-sided noise reduction microphone. Professional microphone noise cancelling technology: Can block 99%

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RJ9 Telephone Headset with Mic Noise Cancelling, Quick Disconnect Phone Headset Compatible with Polycom VoIP VVX311 VVX411 VVX250 Plantronics S12 T110 ShoreTel 480 Nortel NEC Aastra Mitel Desk Phones : Electronics

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RJ11 Call Center Headset Telephone Headphone Customer Service with Microphone

Téléphone de tête du centre d'appel RJ11Le produit est expédié en fonction de la couleur ou de la taille de l'image principale de la page du

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Call Center Hands-Free RJ9 Headset Headphone Monaural Mic Mircrophone Noice Cancelling + Extra Cushions for Avaya Nortel Nt Yealink Ge Emerson Viop POE NEC Mitel Office Desktop IP Telephone Phone

MAIRDI Telephone Headset with RJ9 Jack & 3.5mm for Multipe Devices, Office Headset with Mic Noise Canceling for Call Center, Work with Landline Deskphone Cell Phone PC Laptop : Electronics