Plantronics Blackwire 710/720 Spares and Accessories 89109-01
Plantronics Blackwire C710 Over-The-Head Monaural Headset for Unified Communication (87505-02) - Newegg.com
Copia - END OF LIFE (EOL): BLACKWIRE 700 SERIES The Blackwire 710, Blackwire 720, and Blackwire 725 corded USB products are going end of life. The last order will be November 30,
Replacement Ear Pads cover Compatible with Plantronics Blackwire 710 720 725 C710 C720 C725M Poly USB / PC Headset|Earphone Accessories| - AliExpress
Plantronics Blackwire C710-M Headset Microsoft Lync 87505-01