The HA-66M is a high quality over-ear headset with built-in gooseneck microphone and volume control. This headset features washable, replaceable leatherette ear cushions and an adjustable headband in an easy-to-wear lightweight deluxe design with noise-reducing swivel ear-cups and a 6-foot long cord. Each HA-66M headset comes in its own heavy-duty, write-on, moisture resistant, re-closable bag. When sealed in the bag, lice are killed in 24-48 hours, without the use of chemicals.