Tune into your learning partner or trainee's H & HW Series Plantronics headsets during live calls with this Y Adapter Training cord with mute switch offering exceptional audio sound and control, perfect for settings with OSHA and Noise at Work requirements. This genuine Plantronics Y-Cord, in-line Y Adapter Trainer is compatible with Plantronics H & HW Series headsets with 4 pin quick disconnect (QD) feature to avoid dropped calls with headset disconnection. For more details regarding using your Plantronics H & HW Series headsets with this adapter, please refer to Plantronic's Part Number 27019-03 and feel free to message any additional questions or concerns before or after purchasing, happy to help. Buyer is responsible for paying any governmental taxes imposed on your purchases, includi.