Product accessories below (you may need to scroll down)
The CC 510 is an extremely robust monaural headset. It provides excellent sound and is very comfortable to wear. The durable construction makes it perfect for any type of office or professional communication.
Over the head
Ultra noise cancelling microphone
Activegard protection technology protects user from effects of an acoustic burst
300° adjustable microphone boom allows the mic to be positioned exactly for optimal speech clarity
Unique comfort pads and a specially padded ear cap
OFFICE PHONES 
VoIP PRODUCTS 
When 2 or 3 handsets is enough...