Poly BLACKWIRE C3210 USB HEADSET ( Plantronics ) - 3CX IPPBX 電話系統(香港) | Hong Kong Platinum Partner | Software Based IP Phone & Call Center Solution (HK)
Plantronics Blackwire C3210 USB Headset 209744-104 PC-Canada
Plantronics Blackwire C3210 Mono USB-A Headband Computer USB Headset New In Box | eBay