This is the Replacement or Spare Cable Assembly, Remote for the Poly CA22CD-SC Wireless Headset PTT system.
Important Note: This part is NOT compatible with the original CA12CD or CA12CD-S or CA22CD-DC
*Important Note on Returns: Due to the manufactures policy, this is a special order item. All Sales are FINAL. It's not returnable, not refundable under any circumstance. If it's defective, Plantronics will replace it for you under warranty