It requires a Plantronics M22 headset ampliufier which is not included The Plantronics H61N Supra headset is the most popular headset in the world, the Supra owes its popularity to the perfect balance between light weight, superior sound and outstanding comfort. The dual earpieces have a yoked double cable, which gives greater clarity by providing sound in both ears. The noise-canceling headset makes speech much clearer in noisy environments. Important Note: This headset requires the Plantronics M22 Vista amplifier or bottom cable between the headset and the telephone. *This item be shipped to buyer from my fulfillment house with tracking number. Buyer is responsible for paying any governmental taxes imposed on your purchases, including, but not limited to, sales, customs, use or value-ad.
