Plantronics 86179-01 CS540 Replacement Earpiece
Plantronics 86179-01 Spare Convertible Headset for CS540, (top only)
works on (Plantronics CS540 system base is labeled as C054 or CO54)
For CS540 Wireless headsets only
Battery included
CS540 SERIES COMPARISON SHEET
CS540 USER GUIDE
CS540 QUICK START GUIDE
