Super affordable headphone features 3.5mm stereo plug and 6' braided, chew-resistant nylon cord. Designed to combat the spread of head lice in schools, each headphone comes in its own heavy-duty bag that kills lice in 24-48 hours without the use of chemicals. Lab Pack includes 24 headphones, each with its own resealable bag, and a lockable carrying case. One-year warranty.