HamiltonBuhl HA-66M Deluxe Multimedia Headset With Steel-Reinforced Gooseneck Microphone The HA-66M is a high quality over-ear headset with built-in, steel-reinforced gooseneck microphone and volume control. This headset features washable, replaceable soft vinyl ear cushions and an adjustable headband in an easy-to-wear lightweight deluxe design with noise-reducing swivel ear-cups and Dura-Cord™ - our chew and kink-resistant, PVC jacketed nylon cord. Each HA-66M headset comes in its own heavy-duty, write-on, moisture resistant, reclosable bag. When sealed in the bag, lice are killed in 24–48 hours, without the use of chemicals.