The Plantronics CS60 / C65 neckband adaptor is usually bought in conjunction with the CS60 / C65 Neckband. When the adaptor is connected to the neckband it creates a complete product. You are then able to to attach the whole neckband to the wireless headsets earpiece. This adaptor will connect onto both the Plantronics CS60 wireless headset and the Plantronics C65 wireless headset.
The picture shows both parts, both the circular neckband adaptor and the neckband however only the circular neckband adaptor is supplied. The neckband is a seperate purchase.