FYI: We have discontinued all of these products. However, the information is still correct!
C054 = Plantronics CS540
C052 = Plantronics CS520
C051 = Plantronics CS510
C053 = Plantronics CS530
Time for a new headset?
Lots of Plantronics (Poly) Customers have switched to the LH370!
(415) 351-5857
kyle@headsets.com